page_title: Valleriite
hierarchical_section_title: Valleriite
caption_attribution_description: English: Cubanite, Maucherite, Valleriite Locality: Mackinaw Mine (Weden Creek Mine), Monte Cristo, Monte Cristo District, Snohomish County, Washington, USA (Locality at mindat.org) Size: 12.6 x 9.2 x 5.1 cm. A hefty ore specimen, with probably tons of material stuck inside it as well as what you see on the outside, judging by the look of it. I think the cubanite (and associated more rare species) fills thin fracture seams within. On the exposed main face, there are dozens of thin, flat-lying cubanite crystals to 7mm in size. Apparently this specimen was exchanged to the Academy by the Smithsonian. Ex. Philadelphia Academy of Sciences and Smithsonian Institution Collections. Deutsch: Cubanit, Maucherit, Valleriit Fundort: Mackinaw Mine (Weden Creek Mine), Montecristo, Monte Cristo District, Snohomish County, Washington , Vereinigte Staaten (Fundort bei mindat.org) Größe: 12.6 x 9.2 x 5.1 cm.
context_page_description: Valleriite is an uncommon sulfide mineral of iron and copper with formula: 4S·3(OH)₂ or (Fe²⁺, Cu)₄(Mg, Al)₃S₄(OH, O)₆. It is an opaque, soft, bronze-yellow to brown mineral which occurs as nodules or encrustations.
context_section_description: 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 is an opaque, soft, bronze-yellow to brown mineral which occurs as nodules or encrustations.
caption: Cubanite (brass yellow), maucherite (dark gray) and valleriite (dark bronze), mainly.
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