Thortveitite
Sc₂Si₂O₇
Silicates
Hardness —
· Monoclinic
Ferro-tschermakite
☐Ca₂(Fe²⁺₃Al₂)(Si₆Al₂)O₂₂(OH)₂
Ca-amphibole, double chain inosilicate mineral
Properties
- Chemical formula
- ☐Ca₂(Fe²⁺₃Al₂)(Si₆Al₂)O₂₂(OH)₂
- Group
- Silicates
- Crystal system
- Monoclinic
- Hardness (Mohs)
- —
- Color
- —
- Luster
- —
- Streak
- —
- Density
- —
- Cleavage
- —
- Fracture
- —
- Tenacity
- —
- Crystal habit
- —
- Transparency
- —
- Space group
- C2/m
- Fluorescence
- —
- Magnetism
- —
- Radioactivity
- —
- Refractive index
- —
- Optical character
- —
- Birefringence
- —
- Pleochroism
- —
- Strunz classification
- 9.DE.10
- Dana classification
- —
- IMA status
- Approved mineral and/or valid name (A)
- IMA symbol
- Fts
- Locality
- 🇫🇷 La Clarté, Perros-Guirec
- Type locality
- —
- Discovery year
- —
Etymology
Named after iron(II)
Source: Wikidata
For sale on the marketplace
View all →
No offers for Ferro-tschermakite at the moment. Browse the marketplace →
