Name |
|
Axinite |
Chemistry |
|
Ca2(Fe,Mn)Al2[OH|BO3|Si4O12] |
Hardness |
|
6.5 - 7 |
Lustre |
|
vitreous |
Colour |
|
colourless and in all colours, zonal coloured,
transparent, translucent |
Streak |
|
white |
Density [g/cm3] |
|
3.3 |
Crystal habit |
|
trigonal, crystals columnar,
striated |
Cleavage, Fracture |
|
[010] distinct, fracture conchoidal |
other characteristics
and occurrences |
|
ferroaxinite
= (Fe), lilac brown to black
magnesiumaxinite = (Mg), pale blue to grey
manganaxinite = (Mn), yellow-orange
tinzenite = (Fe+Mn),
yellow
in cavities of granites, in limestone rich rocks in the contact
area, in crystalline schists |
|
|
|