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Valleriite information


Valleriite
Cubanite (brass yellow), maucherite (dark gray) and valleriite (dark bronze), mainly
General
CategorySulfide mineral
Formula
(repeating unit)		(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
Strunz classification2.FD.30
Dana classification2.14.1.1
Crystal systemTrigonal[1]
Crystal classHexagonal scalenohedral (3m)
H-M symbol: (3 2/m)
Space groupR3m
Unit cella = 3.79, c = 34.1 [Å]; Z = 2
Identification
ColorBronze-yellow, gray
Crystal habitMassive, nodular, encrustations, thin splintery
CleavageExcellent on {0001}
Mohs scale hardness1–1.5
LusterMetallic
StreakBlack
DiaphaneityOpaque
Specific gravity3.14 (measured)
PleochroismStrong; pale yellow to deep brown
References[2][3][1]

Valleriite is an uncommon sulfide mineral (hydroxysulfide) of iron and copper with formula: 4(Fe,Cu)S·3(Mg,Al)(OH)2[3] or (Fe2+,Cu)4(Mg,Al)3S4(OH,O)6.[2] It is an opaque, soft, bronze-yellow to brown mineral which occurs as nodules or encrustations.

  1. ^ a b Valleriite data on Webmineral
  2. ^ a b Valleriite on Mindat.org
  3. ^ a b Handbook of Mineralogy

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Valleriite

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Valleriite is an uncommon sulfide mineral (hydroxysulfide) of iron and copper with formula: 4(Fe,Cu)S·3(Mg,Al)(OH)2 or (Fe2+,Cu)4(Mg,Al)3S4(OH,O)6. It...

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Mineral hydration

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Fe2+)5S6(OH)10, also written 6 Fe0.9S · 5 (Mg,Fe2+)(OH)2, in IMA notation valleriite, an uncommon sulfide-hydroxide mineral of iron(II) and copper of chemical...

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List of minerals

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Urusovite Ussingite Utahite Uvarovite Uytenbogaardtite Vaesite Valentinite Valleriite Vanadinite Vanadiocarpholite Vanadium Vandenbrandeite Vantasselite Vanuralite...

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List of mineral symbols

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Valentinite Vln Vapnikite Vpn Vermiculite Vrm Violarite Vio Volynskite Vol Valleriite Val Varennesite Vrn Vernadite Vnd Virgilite Vir Vonbezingite Vbz Valleyite...

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Sulfide mineral

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05 Kermesite, 10 Viaeneite, 20 Erdite, 25 Coyoteite; 30 Haapalaite, 30 Valleriite, 30 Yushkinite; 35 Tochilinite, 40 Wilhelmramsayite, 45 Vyalsovite, 50...

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Ekplexite

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(molybdenum- and manganese-analogue). All three minerals belong to the valleriite group, and crystallize in the trigonal system with similar possible space...

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Pentlandite

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minerals such as bravoite, chalcopyrite, cubanite, millerite, pyrrhotite, valleriite, as well as other minerals like chromite, ilmenite, magnetite, and sperrylite...

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Troilite

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deposits occurring with pyrrhotite, pentlandite, mackinawite, cubanite, valleriite, chalcopyrite and pyrite. Troilite is extremely rarely encountered in...

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Maucherite

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Maucherite Cubanite-maucherite-valleriite General Category Arsenide mineral Formula (repeating unit) Ni11As8 IMA symbol Muc Strunz classification 2.AB...

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Djerfisherite

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roedderite, alabandite, talnakhite, pentlandite, chalcopyrite, magnetite, valleriite, sphalerite and platinum minerals. Warr, L.N. (2021). "IMA–CNMNC approved...

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Coyoteite

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mineral, coyoteite structure might be close to that of valleriite, 4(Fe,Cu)S•3(Mg,Al)(OH) 2. Valleriite is a layered mineral, it consists of layers of (Mg0...

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Mount Isa Mines

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carbonates and graphite. Minor arsenopyrite, marcasite, chalcopyrite, valleriite, proustite, polybasite and argentite also occur. Original surface oxidized...

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Industry of Kosovo

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Marmatite Stannite Stephanite Stibnite Struvite Tennantite Tetrahedrite Valleriite Vivianite Wollastonite Kosovo Energy Corporation J.S.C (KEK) is the sole...

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