Valleriite
2[(Fe,Cu)S]·1.53[(Mg,Al)(OH)₂]
Uncommon sulfide-hydroxide mineral of iron and copper
Properties
- Chemical formula
- 2[(Fe,Cu)S]·1.53[(Mg,Al)(OH)₂]
- Group
- Sulfides
- Crystal system
- Trigonal
- Hardness (Mohs)
- —
- Color
- Brown
- Luster
- —
- Streak
- Black
- Density
- —
- Cleavage
- —
- Fracture
- —
- Tenacity
- —
- Crystal habit
- —
- Transparency
- —
- Space group
- —
- Fluorescence
- —
- Magnetism
- —
- Radioactivity
- —
- Refractive index
- —
- Optical character
- —
- Birefringence
- —
- Pleochroism
- —
- Strunz classification
- 2.FD.30
- Dana classification
- 2.14.1.1
- IMA status
- Grandfathered mineral (G)
- IMA symbol
- Val
- Locality
- —
- Type locality
- —
- Discovery year
- —
Etymology
Named after Johan Gottschalk Wallerius
Source: Wikidata
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