Thortveitite
Sc₂Si₂O₇
Silicates
Hardness —
· Monoclinic
Photo: Strickja · Public domain
Yuksporite
K₄(Ca,Na)₁₄(Sr,Ba)₂(☐,Mn,Fe)(Ti,Nb)₄(O,OH)₄(Si₆O₁₇)₂(Si₂O₇)₃(H₂O,OH)₃
Inosilicate mineral
Properties
- Chemical formula
- K₄(Ca,Na)₁₄(Sr,Ba)₂(☐,Mn,Fe)(Ti,Nb)₄(O,OH)₄(Si₆O₁₇)₂(Si₂O₇)₃(H₂O,OH)₃
- Group
- Silicates
- Crystal system
- Monoclinic
- Hardness (Mohs)
- —
- Color
- Brown
- Luster
- —
- Streak
- —
- Density
- —
- Cleavage
- —
- Fracture
- —
- Tenacity
- —
- Crystal habit
- —
- Transparency
- —
- Space group
- P2/m
- Fluorescence
- —
- Magnetism
- —
- Radioactivity
- —
- Refractive index
- —
- Optical character
- —
- Birefringence
- —
- Pleochroism
- —
- Strunz classification
- 9.DG.95
- Dana classification
- 66.3.1.5
- IMA status
- Grandfathered mineral (G)
- IMA symbol
- Yks
- Locality
- 🇷🇺 Hackman valley
- Type locality
- —
- Discovery year
- —
Etymology
Named after Mount Yukspor
Source: Wikidata
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