General Information:
Chemical Formula:
Ca(Fe+++,Al)2Ti4O12·4(H2O)
Composition:
(Molecular Weight = 598.69 gm)
Calcium 6.69 % Ca
Titanium 31.99 % Ti
Aluminum 1.35 % Al
Iron 15.86 % Fe
Hydrogen 1.35 % H
Oxygen 42.76 % O
Empirical Formula:
CaFe3+1.7Al0.3Ti4O12·4(H2O)
Environment:
In miarolitic cavities in pegmatites cutting pyroxenite.
IMA Status:
Approved IMA 1959
Locality:
Afrikanda massif, Kola Peninsula, Russia.
Name Origin:
Named for the composition (Ca, Fe, Ti).
Physical Properties:
Cleavage:
[???] Good
Color:
colorless or pale yellow.
Density:
3.28
Diaphaniety:
Transparent
Habits:
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Acicular - Occurs as needle-like crystals., Aggregates - Made of numerous individual crystals or clusters.
Hardness:
4-5 - Fluorite-Apatite
Luster:
Adamantine
Streak:
white
More details...