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chlorite vermiculite minerals

  • Chlorite: Mineral description, properties and formation

    This test distinguishes chlorite from vermiculite and minerals with incomplete chlorite layers, all of which collapse to 1.0 nm. It also differentiates chlorite from mixed-layer minerals involving chlorite and incomplete chlorite layers, showing mixed-layer 1.4/1.0-nm reflections.

  • Clay mineral - Vermiculite | Britannica.com

    Chlorite structures are relatively thermally stable compared to kaolinite, vermiculite, and smectite minerals and are thus resistant to high temperatures. Because of this, after heat treatment at 500°–700° C, the presence of a characteristic X-ray diffraction peak at 14 Å is widely used to identify chlorite minerals.

  • Chlorite: The mineral Chlorite information and pictures

    Chlorite is the group name for about 10 related minerals. However, the term Chlorite can be used both to describe the group in general, or as a specific term to describe any green member of the Chlorite group whose exact identity is not practical to be determined.

  • CHLORITE (Iron Aluminum Magnesium Silicate Hydroxide)

    Chlorite is a general name for several minerals that are difficult to distinguish by ordinary methods. These minerals are all apart of the Chlorite Group of minerals. The chlorites are often, but not always considered a subset of the larger silicate group, The clays. The general formula for chlorite is (Fe, Mg, Al)6(Si, Al)4O10(OH)8.However there are several different minerals that are apart ...

  • Chlorite-smectite clay minerals and fault behavior: New ...

    The San Andreas Fault Observatory at Depth (SAFOD) drill hole in Parkfield, California, provides new insights into frictional properties by recognizing the importance of smectitic clay minerals, as demonstrated by analysis of mudrock and fault gouge samples from zones between 3186 and 3199 m and 3295 and 3313 m measured depths.

  • (PDF) Effects of Temperature, pH, and Iron/Clay and Liquid ...

    Effects of Temperature, pH, and Iron/Clay and Liquid/Clay Ratios on Experimental Conversion of Dioctahedral Smectite to Berthierine, Chlorite, Vermiculite, or Saponite

  • Vermiculite Mineral Data

    A Bijoux Google Search for Vermiculite Dakota Matrix Minerals Google Search for Vermiculite John Betts Fine Minerals Search for Vermiculite McDougall Minerals Google Search for Vermiculite Rock and Mineral Shows Google Search for Vermiculite Weinrich Minerals, Inc. Google Search for Vermiculite. Ask about Vermiculite here :

  • Division of Geology and Mineral Resources - Vermiculite

    Vermiculite is a clay mineral group with the general chemical composition (Mg,Fe,Al) 3 (Al,Si) 4 O 10) (OH) 2 ·4(H 2 O). Often occurring as an alteration product of biotite mica or chlorite in the near-surface zone of weathering, vermiculite is typically found associated with ultramafic rock types such as peridotite and pyroxenite that have been previously altered by intrusions of granite ...

  • THE CLAY MINERAL GROUP - galleries.com

    The Montmorillonite/Smectite Group This group is composed of several minerals including pyrophyllite, talc, vermiculite, sauconite, saponite, nontronite and montmorillonite They differ mostly in chemical content. The general formula is (Ca, Na, H)(Al, Mg, Fe, Zn)2(Si, Al)4O10(OH)2 - xH2O, where x represents the variable amount of water that members of this group could contain.

  • USGS OFR01-041: Vermiculite

    Vermiculites are usually formed in sediments by the alteration of micaceous minerals (biotite and chlorite to trioctahedral vermiculite; muscovite to dioctahedral vermiculite; Moore and Reynolds, 1997). However, vermiculites formed through the alteration mica are comparatively rare in marine sediments because the K of sea water readily ...

  • archive.usgs.gov

    COMPOSITION_TRACE: None COMPOSITION_DISCUSSION: Corrensite is a regular 1:1 interstratification of trioctahedral chlorite and trioctahedral smectite or vermiculite.

  • Chlorite group - Wikipedia

    Chlorite is commonly found in igneous rocks as an alteration product of mafic minerals such as pyroxene, amphibole, and biotite.In this environment chlorite may be a retrograde metamorphic alteration mineral of existing ferromagnesian minerals, or it may be present as a metasomatism product via addition of Fe, Mg, or other compounds into the rock mass.

  • Clay Mineralogy of Some Carolina Bay Sediments

    ABSTRACT. Kaolinite, a 14 A o clay mineral, and illite were identified in 23 samples collected from five Carolina Bays in southern North Carolina. The 14 A o clay mineral does not have the characteristics of any of the usual 14 A o clay minerals and can with some justification be called expanded illite, vermiculite, chlorite, or montmorillonite. White Lake and Singletary Lake, both near ...

  • Mineral resource of the month: vermiculite

    Vermiculite comprises a group of hydrated, laminar magnesium-aluminum-iron silicate minerals resembling mica. They are secondary minerals, typically altered biotite, iron-rich phlogopite or other micas or clay-like minerals that are themselves sometimes alteration products of amphibole, chlorite, olivine and pyroxene.

  • A Regular Mixed-Layer Chlorite–Vermiculite Mineral | Nature

    VARIOUS mixed-layer clay minerals have been reported in many publications. So far as the structure is concerned, the main interest in this field of investigations has been in examining the way of ...

  • 6 Main Types of Clay Minerals - Soil Management India

    ADVERTISEMENTS: This article throws light upon the six main types of clay minerals. The types are: 1. Kaolinite 2. Smectite Group 3. Illite Group 4. Vermiculite 5. Chlorite 6. Allophanes. Type # 1. Kaolinite: The most prominent member of the 1: 1 type of clay minerals is kaolinite, in which one silica tetrahedral layer is […]

  • Phyllosilicates (Micas, Chlorite, Talc, & Serpentine)

    Thus, chlorite can have a rather complicated formula - (Mg,Fe,Al) 3 (Si,Al) 4 O 10 (OH) 6. Occurrence- Chlorite is a common mineral in low grade metamorphic rocks, where it occurs in association with minerals like actinolite, epidote, and biotite. It also forms as an alteration product of pyroxenes, amphiboles, biotite, and garnet in igneous as ...


    interstratified chlorite-vermiculite clay mineral. The first example of a ciay characterized by a specific regularly alter-nating epitactic intergrowth was rectorite (1) which consists of alter-nations of one pyrophyllite unit with one vermiculite unit. Similarly complex chloritic minerals from …

  • Characterization of Hydroxy-Interlayered Vermiculite and ...

    These residues exhibited the typical XRD pattern of hydroxy-interlayered intergrade minerals, but the interlayered contaminants were found to be mainly hydroxy-Mg cations. Further mineralogical transformations of the intergrade minerals involved the progressive removal of the hydroxide interlayered sheet and dissolution of chloritic layers.

  • Vermiculite: Mineral information, data and localities.

    Forms as an alteration product of biotite or phlogopite, by weathering or hydrothermal action. Vermiculite is mined as a natural insulation material.

  • Chlorite: Mineral information, data and localities.

    A name commonly used for undifferentiated members of the chlorite group. 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." Common species in the group commonly termed "chlorite" are clinochlore, chamosite, and cookeite.

  • Vermiculite - Wikipedia

    Vermiculite exfoliators have an international trade association called The Vermiculite Association to represent the industry's interests and to exchange information. Fireproofing. Today spray-applied fireproofing materials use vermiculite, other industrial minerals, and expanded polystyrene, depending upon the exact commercial product.

  • Vermiculite mineral information and data

    Vermiculite - Phyllosilicate - Monoclinic - Not a Mica group member. But is micaceous. ... Requires Biotite, Chlorite, Hornbelnd and Serpentines to form. Vermiculite contains so much water it will exfoliate when burned. ... More on rare mica minerals. Click thumbnail images for larger view. Vermiculite from Palabora mine, Phalaborwa, Limpopo ...


    OCCURRENCE OF REGULARLY INTERSTRATIFIED CHLORITE-VERMICULITE AS A WEATHERING PRODUCT OF CHLORITE IN A SOIL1 LooN J. Jouxsox, Department of Agronomy, The Pennsyluon'ia State University, (Jniversity Park, Pa. ABSTRACT Regularly interstratified chlorite-vermiculite (1:1) is found as a weathering product of

  • USGS OFR01-041: Mixed-layer clays

    Mixed-layer clays can form by weathering involving the removal or uptake of cations (e.g. K), hydrothermal alteration, or removal of hydroxide interlayers, and, in some cases, may represent an intermediate stage in the formation of swelling minerals from non-swelling minerals or visa versa (MacEwan and Ruiz-Amil, 1975; Sawhney, 1989).

  • CLAY MINERALS - Southern Research

    1:1 Clay Minerals The 1:1 layer minerals contain one tetrahedral and one octahedral sheet in their basic structural unit (Fig. 2.) This two-sheet mineral type is represented by the kaolin group, with the general formula Al2Si205(0H)4. Kaolinite, the most common mineral in this group, is dioctahedral, exhibiting Al3+ octahedral and Si4 ...

  • Chlorite - an overview | ScienceDirect Topics

    Gangue minerals associated with sulfide-rich tailings include various aluminosilicate minerals such as chlorite, smectite, biotite, muscovite, plagioclase, amphibole, and pyroxene. Their contribution to acid-neutralization reactions has been examined in a number of …

  • The clay minerals are sub- vermiculite, illite, and ...

    The clay minerals are sub-divided into the five common families: montmorillonite, chlorite, vermiculite, illite, and kaolinite. One X-ray scan of a magnesium ion saturated, ethylene glycol treated sample was sufficient for the identification of all the clay minerals. A typical Recent hemipelagic sed.ment contains about 40 percent

  • Mineral Resource of the Month: Vermiculite | EARTH Magazine

    Vermiculite comprises a group of hydrated, laminar magnesium-aluminum-iron silicate minerals resembling mica. They are secondary minerals, typically altered biotite, iron-rich phlogopite or other micas or clay-like minerals that are themselves sometimes alteration products of amphibole, chlorite, olivine and pyroxene. Vermiculite deposits are associated with volcanic ultramafic rocks rich in ...

  • Clay mineral | rock | Britannica.com

    Clay mineral, any of a group of important hydrous aluminum silicates with a layer (sheetlike) structure and very small particle size. They may contain significant amounts of iron, alkali metals, or alkaline earths. The term clay is generally applied to (1) a natural material with plastic

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