Nomenclature of chlorites. A new classification based on the unified projection system of chemical composition has been proposed in which for the first time all trioctahedral, di-trioctahedral and dioctahedral species are included. On the basis of some experimental work it is shown that the currently adopted procedure for the identification of chlorites is not generally valid, and that the factors of time, temperature, composition and particle size INTRoDUcTIoN Because of their small particle-size and vari-able degree of crystal perfection, it is not sur-prising that clay minerals proved extremely difficult to characterize adequately prior to the development of modern analytical . The search results guide you to high-quality Vermiculite, perlite and chlorites, unexpanded; Examples: - Unexpanded Vermiculite ore, 1000 kg net weight - Package of Perlite gravel, 50 kg per bag, A B S T R A C T : The classification and nomenclature of chlorites have been critically reviewed. 42, 75–79. A new classification based on the unified projection system of chemical composition has been … The chlorite specieskotschubeite and kdmmererite were originally designatedas chromium-containing penninite and clinochlore. The end member compositions are: clinochlore (Mg5Al)(Si3Al)O10(OH)8; chamosite (Fe5Al) (Si3Al)O10(OH)8; nimite (Ni5Al)(Si3Al)O10(OH)8; and pennantite (Mn5Al)(Si3Al)O10(OH)8. doi: Download scientific diagram | (A) Classification of chlorites based on the diagram of Hey (1954). There is a continuous solid solution series between the Mg and Fe varieties. The classification and nomenclature of chlorites have been critically reviewed. Mar 14, 2018 · Only two, or at most three, variables can be considered on a two-dimensional composition diagram; six variables must be fixed to completely define a variety of the chlorite or septechlorite groups. cult primarily because of the discrepancies between chemical and structural data now available for the chlorites. The four types of chlorine oxoanions are hypochlorites, chlorites, chlorates Most chlorites are trioctahedral and as such they are normally rich in Fe and Mg. This figure is assumed to capture the entire cation variability in chlorites, even though small amounts of K, Ti, Na, and Ca are frequently reported, with large vari-ability and skewed distribution. Dec 31, 2024 · A genetic linkage between U–Cu–Mo mineralization with feldspar and chlorite minerals and the discrimination of different mineralization events in the hydrothermal and metasomatic system in the Rohil polymetallic uranium deposit in India is presented on the basis of textural relationships and mineral chemistry. For many years the nomenclature and classification of trioctahedral chlorites was plagued by the existence of numerous species names. 8 atoms per 4 tetrahedraI positions. , R. The interlayer hydroxide sheet is an octahedral sheet as shown in Figure 3 and can be either di- or trioctahedral. This classification is further subdivided by the European Union into the eight-digit Combined Nomenclature (CN) codes. The first six digits refer to the classification in the WCO Harmonized System (HS). Two further observations from Orcel's chlorite thermograms might Summary. (195O),Serdyuchenko (1953), Hey (1954), Brindley & Gillery $956), Lapham (1958), Fos-ter (7962), Phillips (1. , in science and technology, medicine and pharmacy. Vidal & Parra, 2000; Cathelineau et al. It provides free access to secondary information on researchers, articles, patents, etc. , 2015] refer to corundophilite as amesite (which technically is, however, a serpentine group mineral), and to chamosite, the Fe 2+ -bearing variety of clinochlore 8. Two stages of dehydration, oxidation of errous iron, and structural coll appear pse as For rock-forming minerals, the extent and the behavior of solid solution are understandable only if considered in ttre context of a rigorous petrological framework, as has been shown repeatedly in the met?morphic perology literature. The fifth analysis, on a grain in a sample of fresh fine-grained porphyritic rock from Kitty Crags (his Hedgehope type), revealed an apparently very silica-rich chlorite with a high K2O content. (1987) Mineral nomenclature: Imogolite. On the basis of his results, Lapham proposed considerable mineralogical interest because of their that the name kdmmererite be used for chromian pleasing pink to red to violet colors. The chlorine atom is in an odd-number positive oxidation state, and the atom is surrounded by oxygen atoms and lone pairs of electrons. The PGE-enriched zone at Unki Mine is a ~10 m thick the suggestionof Bayliss (1975) for simptfication of chlorite nomenclature. techniques. (1975) Nomenclature of the trioctahedral chlorites: Can. S. According to the modern nomenclature (Guggenheim et al. ), and adjectival modifiers (Mg-chlorite, Fc-chlorite, Al-chlorite). Chlorites are also known as salts of chlorous acid. This paper summarizes the results n iron-poor chlorites. Green chlorites with anomalous blue inter-Albee's schemes with the revised nomenclature of ference colours arelikely tobe antigorite Phillips and Griffen (1981) into fig. 18 to 1. chlorite group – Mindat). Less commonly, chlorites may be dioctahedral in which case they tend to be enriched in aluminum. A new classification based on the unified projection system of chemical composition has been … In terms of compositional variations related to Mg–Fe substi-tution in octahedral sites, chlorites are subdivided into Mg-rich, Mg–Fe, and Fe-rich varieties. The varieties between these end member compositions should be described by adjectival modifiers This writer ag ees with the nomenclature of Hey (1954) where the chlorite composition andstructural type wi al low (i. Members of the chlorite group include: brunsvigite, chamosite, clinochlore, cookite, diabantite, nimite, pennantite, penninite, ripidolite, sheridanite, and thuringite. Chlorites with high first-order interference Mar 14, 2018 · The normal 14 Å chlorites and 7 Å septechlorites have traditionally been associated together and, although they represent two distinct structural groups, are considered together for classification purposes, since they share many identical variety compositions; a sixth variable denotes structural type, as determined by X-ray powder diffraction A B S T R A C T : The classification and nomenclature of chlorites have been critically reviewed. This diagram illustrates clearly he The proposed classification differentiates chlorites by dominant divalent octahedral cation, enhancing accuracy in rock-forming analyses. Identification and description of chlorite species, including new ones, significantly widened the prospecting criteria for nickel and associated minerals. Instead of being electrically neutral as Introduction and nomenclature of d spacings of certain reflections against percent Chromium-bearing chlorites long have been of CrrOr. 04 to 0. The free acid, chlorous acid HClO 2, is the least stable oxoacid of chlorine and has only been observed as an aqueous solution at low concentrations. Lapham (1958) and Bailey (1975)give historical accounts of Cr-chlorite classificationand nomenclature. Article Google Scholar Bayliss, P. Google Scholar Bayliss, P. L. WinCcac classifies rock-forming chlorite group minerals based on 14 oxygens for complete chlorite analyses. Trioctahedral chlorites s ould be named according to the dominant divalent octahedral cation present. Since it cannot be concentrated, it is not a commercial product. Autant que possible et jusqu'à nouvel ordre, il suffira donc de décrire et caractériser de tels composés en se référant uniquement à leur composition chimique. 3, sheet silicates, 131{163. Minerals containing the unil are chlorites in both the mineralogical and chem-ical sense and are related, as discussed in this paper, to normal chlorites by a polymorphic rearrangement. Problems in characterization led quite naturally to problemsin nomenclature,undoubtedly more so than for the macroscopic, more perfectly crystalline Oct 1, 2016 · Chlorites are petrogenetically important minerals, exercise controls on petroleum reservoir qualities, are common in alteration zones during hydrothermal ore mineralization, and may form during carbon sequestration in sedimentary formations. W. Problems have arisen because different narnes have been given in the original descriptions for similar compositions, and then the same name has Dec 1, 2006 · Bayliss, P. Thegroup comprises aluminosilicates of magnesium and iron Download scientific diagram | Nomenclature of orthochlorites of Hey (1954, from Kostov, 1993) with figurative points of the studied chlorite, where Al=5- (Fe+Mg+Mn+Cu) formula units from We would like to show you a description here but the site won’t allow us. Mineralogical Magazine, 51, 327. PDF documents opened from your browser may not display or print as intended. There is a perfect basal cleavage parallel to (001). For example, some workers [e. All rights Jul 8, 2011 · Chlorites from the Sakharin, Elov, Buruktal, Cheremsha, and Sinar deposits in the Ural province were studied by the X-ray phase, thermal, and microprobe analyses. The rocks are partially to completely serpenitinized and foliated AsstnA,cr Dioctahedral chlorites described to date can be classified into three categories: 1) chlo-rites with two dioctahedral sheets and an octahedral cation total slightly greater than 4. CHLORITES: METAMORPHIC PETROLOGY was published in Hydrous Phyllosilicates on page 405. , 2013; Bourdelle et al. Chlorites, with positively charged hydroxyl sheets between negatively charged 2:1 layers, have the potential for developing many more polytypic varieties than micas. HCIO4, one of the strongest of the mineral acids. The perchlorates are more stable than the other chlorine oxyanions, ie, chlorates, CIO chlorites, CIO or hypochlorites, OCf (3) (see Chlorine oxygen acids and salts). CHLORITE GROUP The basic structure of chlorites consists of negatively charged mica-like (2:1) layers regularly alternating with positively charged brucite-like (octahedral) sheets (Grim, 1962). The end member compositions are: clinochlore (Mg The Chlorite Group The classification and nomenclature of chlorites have been critically reviewed. ns within a complex solid-solu-tion series. The chemical composition of chlorites is controlled by the general crystallochemical formula Hypochlorites, chlorites and hypobromites (excl. A new classification based on the unified projection system of chemical composition has been proposed in which for the first time all trioctahedral, di-trioc b) Sur le plan de la nomenclature, il est recommandé à l'avenir de ne pas donner de noms à des substances "non cristallines" nouvellement découvertes. Chlorites with high first-order interference Search mindat. Herein, we present a study of the composition of trioctahedral chlorites, with special focus on nen-limigillg minsl4l 455e6!lages in rocks of low metamorphic In terms of compositional variations related to Mg–Fe substi-tution in octahedral sites, chlorites are subdivided into Mg-rich, Mg–Fe, and Fe-rich varieties. 13, 178–180. 5) are generally subdivided according to their optical properties, which reflect their chemical composition (see Trochim in Tröger-Braitsch: proposals to the classification of chlorites from Aug 1, 2015 · A Microsoft Visual Basic program, WinCcac, has been developed to calculate the structural formulae of chlorite. The proposed chlorite nomenclature does not include any new mineral name. Problems have arisen because different narnes have been given in the original descriptions for similar compositions, and then the same name has This paper deals with a simplified procedure for classification of rock-forming chlorites based on chemical data obtained from electron microprobe analyses (EMPA). (2) Deer, W. A new concept of classification for trioctahedral chlorites was proposed by Bayliss (1975) and accepted by the AIPEA Nomenclature Commission (Bailey, 1980). Oct 1, 2022 · Therefore, chlorites formed in different stages were considered as a single classification. and Nickel, E. In order to ascertain the nearest chemically al chlorites ied tothose under dis-cussion, a representative number of selected chlorite analyses have been plotted on a diagram with co-ordinates proportional to R2Oa/SiO 2 and RO/Si02. Therefore, the mineral assemblages The nomenclature of trioctahedral chlorites was reviewed [75B2] and accepted [80B1]. 2 and Table II (talc-chlorite), talc-chlorite, diabantite, or from which t following e generalizations can be brunsvigite. This concept allows chlorites to be classified according to their dominant divalent octahedral cation. The Canadian Mineralogist, 13, 178–180. Mineral. 0 per formula unit, 2) chlorites with one dioctahedral and one trioctahedral sheet and an octahedral cation total near 5. Chlorites with high first-order interference Chlorites can be described by the following four endmembers based on their chemistry via substitution of the following four elements in the silicate lattice: ♦ Clinochlore: (Mg 5 Al) (AlSi 3)O 10 (OH) 8 Search mindat. The chlorite group of minerals derives its name from the common green color of most varieties, although specimens of many diverse colors are known to exist. g. For best results viewing and printing PDF documents, it is recommended that you download the documents to your computer and open them with Adobe Reader. References: (1) Dana, E. 94 and from 5. (B–C) Comparison of chlorite compositions from the charnockitic footwall of the SKI with those This writer ag ees with the nomenclature of Hey (1954) where the chlorite composition andstructural type wi al low (i. e. 5 to 1. Nov 15, 2019 · Chlorine oxoanions are negatively charged polyatomic ions consisting of chlorine and oxygen. Three Aug 1, 2015 · A Microsoft Visual Basic program, WinCcac, has been developed to calculate the structural formulae of chlorite. Point Group: 2=m: In thin to thick pseudohexagonal crystals, with tapering pyramidal faces, to 10 cm. The search results guide you to high-quality Nomenclature and Common names of Acid Chlorides The IUPAC name for acid chlorides is derived from the corresponding carboxylic acid by replacing the suffix "-ic acid" or "-oic acid" with "-yl chloride". Recommended species (a) Classification of Tisovita–Iuti chlorite-group minerals showing the high Mg# = Mg/ (Mg + Fe tot ) in gabbro-derived rocks. While the name "chlorite" once indicated a mineral species, it is now the name of a group of species - there is no longer a single mineral named "chlorite. 86. For 摘要： The classification and nomenclature of chlorites have been critically reviewed. BAILEY, CHAIRMAN 1 Department of Geology and Geophysics University of Wisconsin-Madison Madison, Wisconsin 53706 Introduction Because of their small particle sizes and variable degrees of crystal perfection, it is not surprising that clay minerals proved extremely difficult to Jan 1, 2013 · Most chlorites are trioctahedral and as such they are normally rich in Fe and Mg. Essentially, all of the commercial perchlorate compounds are prepared either direcdy or indirectly by electrochemical oxidation of chlorine compounds (4—8) (see Alkali and Article "Nomenclature of the trioctahedral chlorites. Lapham (1958), using X-ray Chlorite is a common mineral in metamorphosed pelitic, felsic/intermediate, mafic, aluminous calc-silicate, and ultramafic rocks. Since that time, the names have been given to chlorites of a variety of composi-tions and have occasionally been applied inter-changeably. Chapter 11. (1975) Nomenclature of the trioctahedral chlorites. Bayliss; Nomenclature of the trioctahedral chlorites. Code Tree Structure / Hierarchy Change language 2828 Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromites 28281000 Commercial calcium hypochlorite and other calcium hypochlorites Trade restrictions and policies Customs duties, Trade restrictions and policies with validity date: ↗ Check now May 2, 2015 · Screenshot of the WinCcac Calculation Screen window showing classification of trictahedral chlorites with selected plot types from the pull-down menu of Graph⇒Classification Plots options. 5. Crystal Data: Monoclinic. , Kaesz, H. org for 'chlorites' The following result (s) were found: Mineral/rock/commodity names containing 'chlorites' A name commonly used for undifferentiated members of the chlorite group. (2005) The use of chemical-element adjectival modifiers in mineral Sep 22, 2025 · The chlorite group of minerals derives its name from the common green color of most varieties. The nomenclature of trioctahedral chlo rites was accepted by the AIPEA Nomenclature Commis sion of International Association on Clay Minerals (Bailey and Chairman, 1980) in accordance with the recommen dations proposed by Bayliss (1975). Dec 1, 2021 · Chlorites are common constituent of the secondary mineral assemblage formed as alteration products after aluminosilicate host rocks in the Pb-Zn deposits in Madan district. In the 3683-3610-cm−1 spectral The sheet silicate minerals of the chlorite group (compare with II-7. The procedure gives the rules for determination of chlorite types (I and II), and adjectival modifiers (Mg-chlorite, Fe-chlorite, Al-chlorite). 0, and 3) imperfectly crystallized specimens with incomplete interlayers. Note: there is a discrepancy in the nomenclature of chlorites between mineralogists and petrologists (e. 964), Strunz (1970), and Fleischer (I97L). [Italian The chlorite ion, or chlorine dioxide anion, is the halite with the chemical formula of ClO− 2. " Detailed information of the J-GLOBAL is an information service managed by the Japan Science and Technology Agency (hereinafter referred to as "JST"). (1978) Deweylites, mixtures of poorly crystalline hydrous serpentine and talc-like minerals: Mineral. . Results The generally accepted classification of chlorites is presently absent. Apr 30, 2021 · Hyperspectral reflectance has the potential to provide rapid and low-cost mineralogical and chemical information that can be used to vector in mineral systems. (3) Bayliss, P. 1 All of the chlorites between penninite and amesite were synthesizecl and gave a 14 Aseries of basal reflections in their x-ray diagrams ; the normal chlorite pattern. The number of octahedral cations obtained by allocation from a chemical analysis depends on the conversion factor, which is determined in part by the H Chlorites Like mica, chlorite minerals have a 2:1 layer structure with an excess of negative charge. The morphology ranges from fine-grained earthy masses to spherules and rosettes to scaly flakes and pseudohexagonal platelets. A petrographic and silicate composition study across the MSZ at Unki Mine in the Shurugwi Subchamber was conducted to help place some constrains on the origin of the mineralization. The nomenclature and relations among the various chlorites is discussed in the light of this information. For electron-microprobe-derived chlorite analyses site occupancy can be estimated by using the stoichiometric H2 O (wt%) and Fe 2 O 3 (wt%) contents. In contrast to mica, however, the excess charge is balanced by a positively charged interlayer hydroxide sheet (Figure 5), rather than K +. and Brindley, G. Differential therm analysis alone appears inadequate asa tool for distinguishing the many chlorite varieties; however, this process iscapable of yielding much valuable information about the chlorites. INrnonucuoN An entirely satisfactory systematization of the chlorite group is dif-fi. The Canadian Mineralogist 1975;; 13 (2): 178–180. Field and EPMA studies reveal that the chlorite formed in two possible modes Four analyses gave a composition corresponding to pycnochlorite using the nomenclature of chlorites and oxidized chlorites (Hey, 1954). Some authors avoid nomenclature problems by the use of the group name chlorite instead of a speciesname, which is also undesir- Aug 1, 2015 · WinCcac classifies rock-forming chlorite group minerals based on 14 oxygens for complete chlorite analyses. Mag. 2a-c). 1007/BF02904455) This paper deals with a simplified procedure for classification of rock-forming chlorites based on chemical data obtained from electron microprobe analyses (EMPA) The proposed chlorite nomenclature does not include any new mineral name The procedure gives the rules for determination of chlorite types (I and II), and adjectival modifiers (Mg-chlorite, Fe-chlorite, Al Oct 1, 1991 · Raman and Fourier-transformed infrared spectra of natural trioctahedral chlorites of polytype IIb were obtained for a series of samples characterized by distinct Fe/(Fe + Mg) and Si/Al ratios ranging, respectively, from 0. 1. CHLORITES 337 chlorites which woulcl plot along the base of the cliagram at short intervals bdween serpentine ancl amesite. (b) Composition of Tisovita–Iuti chlorites and comparison with The problem of nomenclature of these 7 A series minerals is examined and the term “septechlorites” hesitantly proposed. made. Howie, and J. calcium hypochlorites); Examples: - Sodium hypochlorite solution (12% concentration) - Potassium Green chlorites with anomalous blue inter-Albee's schemes with the revised nomenclature of ference colours arelikely tobe antigorite Phillips and Griffen (1981) into fig. H. It appears, however, that most chlorites have either 1-layer structures or irregular layer sequences. The cleavage flakes are flexible but inelastic, with a Volume 65, pages 1-7, 1980 Summary of recommendations of AIPEA nomenclature committee on clay minerals S. normal 14_~ chlorites containing o ly 'minor' amounts offerric iron, chromium, manganese, and nickel), butprefers toinclude theseptechlorites of Nelson and Roy (1958) as part ofthe broad chlorite group. Type I and Type II chlorites are categorized based on octahedral cation dominance and vacancies in their structure. Example: Ethanoyl chloride is named after ethanoic acid (acetic acid), and benzoyl chloride is derived from benzoic acid. and 2. The procedure gives the rules for determination of chlorite types (1. Part or all of this report is presented in Portable Document Format (PDF). Of the (OH)-deficient chlorites, 44% also have abnormally high values fo octahedral occupancy. Google Scholar Bish, D. In concordant pegmatite Inattempting a comparison w th c lorite analyses already published, great difficulty arises from the confused nomenclature. A. Chlorite thermochemistry and structure have been investigated, in the present study, to facilitate an improved understanding of chlorite equilibria. " Common species in the group commonly termed "chlorite" are clinochlore, chamosite, and cookeite. The lithologic assemblage mapped is exposed on a cliff face and consists of distinguishable horizons that include least, moderately to intensely altered pyroxenite to amphibolite units. They are all oxidizing, but their stability varies, and some may have reducing tendencies. THE chlorites form an extensive isostructural series with a high degree of isomorphous substitution, wi hi which it has always been difficult todefine or delimit species; until recently, owing to the lack of adequate X-ray studies; several structurally distinct species were included with the group, further complicating the problem. However, the spectral signature of white mica and chlorite, despite numerous studies, is not fully understood. Chemically, the chlorites are hydrous silicates incorporating medium-sized cations, primarily Mg, Al, and Fe, but occasionally Cr, Mn, Ni, V, Cu, and Li. INTRODUCTION Recent recogmtton of the fact that chlorite minerals occur widely in day materials has re-emphasized the fundamental problems of chlorite genesis and constitution. The chemical composition of chlorites is controlled by the general crystallo-chemical formula: This is superior P. The 7~ septechlorite structure may be asily distinguished from the normal 14/~ chlorite structure. Article Google Scholar Hypochlorites; commercial calcium hypochlorite; chlorites; hypobromitesIt all starts with a valid HS code Here you can see an overview of the commodity codes used in this sub-division. The various members are Jul 9, 2018 · The classification and nomenclature of chlorites have been critically reviewed. 5. Phyllosilicates considered in this chapter ideally contain a continuous tetrahedral… The meta-ultramafic rocks that are part of the Paleoproterozoic unit termed the Nyong Series in SE Cameroon were investigated in this study. A two-level procedure simplifies chlorite classification using electron microprobe (EMPA) data, without introducing new mineral names. The chemical composition of chlorites is controlled by the general crystallochemical formula Chlorites, with positively charged hydroxyl sheets between negatively charged 2:1 layers, have the potential for developing many more polytypic varieties than micas. D. Zussman (1963) Rock-forming minerals, v. Compilations and classifications of the tri-octahedral chlorites have been rnade by Orcel et al. In this study, we review the mineralogy and chemistry of different white mica and chlorite types and investigate what 20 gave different endothermic peaks for different chlorites, (b) the first endothermic reaction was generally the largest, (c) the differences in the observed intensity of thermal reaction were apparent only on the second inflection, (d) leuchten bergite, aphrosiderite and thuringite appeared to give only one endothermic peak. For electron-microprobe-derived (DOI: 10. At the same time new reliance has been placed rather gene rally on old and insufficiently tested techniques for the identi fication of chloritic constituents of day mineral mixtures. For the same reasons, literature data reporting Fe 3+ -rich chlorite with vacancy content along the possibly artificial di-trioctahedral-type substitution should be verified. Jul 1, 1998 · This paper data deals with a simplified procedure for classification of rock-forming chlorites based on chemical data obtained from electron microprobe analyses (EMPA). Commonly foliated, ̄brous, granular The main platinum-group element (PGE) occurrence in the Great Dyke of Zimbabwe, the Main Sulfide Zone (MSZ), is a tabular stratabound layer hosted in pyroxenites. , 13, 178{180. Name: For the locality at Chamoson, Switzerland. Can. , 2006), chlorites with the predominance of Mg in the octahe-dral site are ascribed to clinochlores. (1892) Dana's system of mineralogy, (6th edition), 658. Mar 1, 2019 · In such ferric chlorites, EPMA measurement of oxygen allows a fair estimate of H content if Fe 3+ /Fe 2+ is known; it should be more systematically implemented. For electron-microprobe-derived Jan 1, 2006 · This chapter describes structures and mineralogy of clay minerals. All samples were characterized by X-ray powder diffraction, and quantitative electron microprobe analysis. A chlorite (compound) is a compound that contains this group, with chlorine in the oxidation state of +3. Chlorite occurs over a wide range of temperature, pressure, and activity of H20 space, from diagenesis to granulite and to eclogite facies. org for 'chlorites' The following result (s) were found: Mineral/rock/commodity names containing 'chlorites' HCIO4, one of the strongest of the mineral acids. Occurrences of the chlorites include dissemination, replacement of mafic minerals, and veins (Fig. The chlorites are hosted in the ore-related intrusion and adjacent wall rocks. It has been shown that the chlorite end-member compositions of Bayliss (1975) project in one point of Chapter 11. Al substitutes for Si between the approximate limitsO. 9 Chlorites and related silicates The nomenclature of trioctahedral chlorites was reviewed [75B2] and accepted [80B1]. It also occurs in metamorphosed Mn-rich rocks and is rare in metamorphosed iron formations. The color is known to vary widely in different specimens, however, and to include different shades of green, black, brown, orange, red, pink, purple, blue, yellow, grey, Clays and Clay Minerals -Report of the Clay Minerals Society Nomenclature Committee for 1977 and 1978 Comment Published: 01 June 1979 Volume 27, pages 238–239, (1979) Cite this article CHLORITES 337 chlorites which woulcl plot along the base of the cliagram at short intervals bdween serpentine ancl amesite. vvi snfva ne xs0w kkqxbb id qj8 ryhv7 7gwa4 1ws5