Johannite
Cu(UO₂)₂(SO₄)₂(OH)₂·8H₂O
Uranyl sulfate mineral
Properties
- Chemical formula
- Cu(UO₂)₂(SO₄)₂(OH)₂·8H₂O
- Group
- Sulfates
- Crystal system
- Triclinic
- Hardness (Mohs)
- 2
- Color
- Green
- Luster
- —
- Streak
- —
- Density
- —
- Cleavage
- —
- Fracture
- —
- Tenacity
- —
- Crystal habit
- —
- Transparency
- —
- Space group
- —
- Fluorescence
- —
- Magnetism
- —
- Radioactivity
- —
- Refractive index
- —
- Optical character
- —
- Birefringence
- —
- Pleochroism
- —
- Strunz classification
- 7.EB.05
- Dana classification
- —
- IMA status
- Grandfathered mineral (G)
- IMA symbol
- Jh
- Locality
- 🇨🇿 Elias mine
- Type locality
- —
- Discovery year
- —
Etymology
Named after Archduke John of Austria
Source: Wikidata
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