Stone, minerals and semiprecious of the world stone Halogenoide, halogenide, halogen: Cottunite
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2 (chloride of lead)
Crystal structure rhombic
Hardness on the Mohs scale 2,5
Specific unit weight mass 5,8
Cleavage perfect absolute
Colors white, whitish-grey
Glance (glitter, glare) from diamond to mother-of-pearl
Natural crystals more frequent than all prismatic. Colors white or light pale grey. In structural attitude toward Cottunite laurionite is near, whose clear white or colourless crystals found out mainly in emptinesses ancient plumbiferous dumps, exposed to the action of salt water on a coast at Lavriona in Greece. In these dumps laurionite be found with such characteristic minerals, as paralaurionite, fiedlerite and penphildite.
Cottunite will dissolve in hot water from which brilliant crystals fall out in-cold. Yellow falls out at affecting solution of dichromate of potassium, gold sediment. Noticeable radio-activity which is revealed in standards from Vesuvius especially interesting.
Origin provenance genesis.
Cottunite is present mainly as aggregates of crystals in modern fumarole near the crater of Vesuvius (EU). It appears jointly with the chlorides of copper and melaconite (tenorite). Rarer he be found as an oxidate galena, galenite outdoors in presence chlorides. Such cases are known in a few places in Chile or not far from a seashore (a peninsula Kornuoll).
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Adamite * Annabergite Eritrine * * Antimonite * Arsenolite ** Arsenopyrite ** Orpiment, Golden Earth ** Baildonite * Beryl ** Blomstrandite, Betafite ** Billietit ** Bismutite * Breithauptite * Witherite * Gadolinite ** Halite, Mine Rock Salt * * Geocronite * Glaukodote * Descloisite Mottramite * * Jordanite * Carnotite ** Cinnabar, Spanish Red, Vermilion ** Cobaltite * Cottunite * Liroconite * Marcasite * Monacite * Ammoniac * Nikeline * Otenite ** Pyromorfite * Chalcolamprite, Pyrochlorine * Prustite * Rammelsbergite * Realgar ** Mercury, Quicksilver * Senarmontite * Sulphur, Sulfur, Brimstone * Skutterudite * Strontianite * * Antimony, Stibium * Tetrahedrite * Thorianite ** Thorite ** Uraninite ** Pharmacolite * Halkozine, Copper-glance * Hatchinsonite * Celestine * * Zircon ** Evksenite ** Enargite * Eshinite ** Conichalcite *
Stone, minerals and semiprecious of the world stone group screening
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Native elements: Diamond carbons Graphite, plumbago, black lead Iron Gold Copper Platinum Mercury, Quicksilver * Sulphur, Sulfur, Brimstone * Silver Antimony, Stibium * Sulphide: Antimonite * Arsenopyrite ** Orpiment, Golden Earth ** Bismutite * Breithauptite * Galena, galenite Glaukodote * Jordanite * Cinnabar, Spanish Red, Vermilion ** Cobaltite * Marcasite * Molybdenite Nikeline * Pyrite Pyrrotine Prustite * Rammelsbergite * Realgar ** Skutterudite * Sphalerite Tetrahedrite * Halkozine, Copper-glance * Chalcopyrite Hatchinsonite * Enargite * Pyroxene (silicates): Diopside Jadeite Spodumene Halogenoide, halogenide, halogen: Halite, Mine Rock Salt * * Cottunite * Ammoniac * Fluorite Spinel (oxides): Magnetite Minium, red lead, saturn red Spinel Oxide and hydrooxide: Arsenolite ** Blomstrandite, Betafite ** Billietit ** Hematite Goethite Quartz Corundum Limonite Opal Polianite, pirolusite Pyrohroite Rutile Senarmontite * Thorianite ** Uraninite ** Chalcedony Zincite Evksenite ** Eshinite ** Other: Astrophyllite Petrified fossilized wood Amber Carbonate: Azurite Aragonite Dolomite Calcite Malachite Siderite Strontianite * * Trona, throne Ulexite Sulphate: Barite Woulffenite Gypsum Crocoite Celestine * * Phosphate: Adamite * Annabergite * Eritrine * Apatite Baildonite * Turquoise Vanadinite Vivianite Kertschenite Descloisite Mottramite * * Carnotite ** Liroconite * Monacite * Otenite ** Pyromorfite * Pharmacolite * Silicate: Andalusite Gadolinite ** Datolite Disthene, kyanite, cyanite Olivine Topaz Thorite ** Zircon ** Euclase Epidotes (silicates): Beryl ** Aquamarine Emerald Heliodor Morganite (vorobyevite) Cordierite, iolite Tourmaline Eudialyte Epidote Garnets (silicates): Grossuliare Arizona ruby, Pyrope Garnet Uvarovite Garnet Mica, isinglass stone (silicates): Biotite, black mica Lepidolite Chlorites (silicates): Clinochlore Serpentine Chrysocolla Feldspar (silicates): Microcline Orthoclase Spar (silicates): Lazurite, Lapis lazuli Sodalite Amphiboles (silicates): Anthophyllite Prehnite Rhodonite Talcum, talc (classification on Types of minerals chemical composition)
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