Ferro-ferri-hornblende | |
---|---|
General | |
Category |
Inosilicate Amphibole supergroup |
Formula (repeating unit) | ☐Ca2(Fe2+4Fe3+)(Si7Al)O22(OH)2 |
IMA symbol | Ffhbl [1] |
Crystal system | Monoclinic |
Crystal class | Prismatic (2/m) (same H-M symbol) |
Space group | C2/m |
Unit cell | a = 9.93, b = 18.22 c = 5.32 [Å], β = 104.86° (approximated) |
Identification | |
References | [2] [3] |
Ferro-ferri-hornblende is an amphibole-supergroup mineral with the formula ☐Ca2(Fe2+4Fe3+)(Si7Al)O22(OH)2. It contains essential vacancy (☐). It was discovered in the Traversella mine, Canavese, Torino, Piedmont, Italy. [2]
Ferro-ferri-hornblende | |
---|---|
General | |
Category |
Inosilicate Amphibole supergroup |
Formula (repeating unit) | ☐Ca2(Fe2+4Fe3+)(Si7Al)O22(OH)2 |
IMA symbol | Ffhbl [1] |
Crystal system | Monoclinic |
Crystal class | Prismatic (2/m) (same H-M symbol) |
Space group | C2/m |
Unit cell | a = 9.93, b = 18.22 c = 5.32 [Å], β = 104.86° (approximated) |
Identification | |
References | [2] [3] |
Ferro-ferri-hornblende is an amphibole-supergroup mineral with the formula ☐Ca2(Fe2+4Fe3+)(Si7Al)O22(OH)2. It contains essential vacancy (☐). It was discovered in the Traversella mine, Canavese, Torino, Piedmont, Italy. [2]