Bykovaite
(Ba,Na,K)₂(Na,Ti,Mn)₄(Ti,Nb)₂(Si₂O₇)₂O₂(H₂O,F,OH)₂·3.5H₂O
TS-Block, sorosilicate mineral
Properties
- Chemical formula
- (Ba,Na,K)₂(Na,Ti,Mn)₄(Ti,Nb)₂(Si₂O₇)₂O₂(H₂O,F,OH)₂·3.5H₂O
- Group
- Silicates
- Crystal system
- Monoclinic
- Hardness (Mohs)
- —
- Color
- —
- Luster
- —
- Streak
- —
- Density
- —
- Cleavage
- —
- Fracture
- —
- Tenacity
- —
- Crystal habit
- —
- Transparency
- —
- Space group
- Cc
- Fluorescence
- —
- Magnetism
- —
- Radioactivity
- —
- Refractive index
- —
- Optical character
- —
- Birefringence
- —
- Pleochroism
- —
- Strunz classification
- 9.BE.50
- Dana classification
- 56.2.10.7
- IMA status
- Approved mineral and/or valid name (A)
- IMA symbol
- Byv
- Locality
- 🇷🇺 Umbozero mine
- Type locality
- —
- Discovery year
- —
Etymology
Named after Alexandra V. Bykova
Source: Wikidata
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