General Information:
Chemical Formula:
(Ba,Sr)(Ti,Cr,Fe,Mg)21O38
Composition:
(Molecular Weight = 1,763.22 gm)
Barium 5.84 % Ba
Strontium 1.24 % Sr
Magnesium 0.69 % Mg
Titanium 35.30 % Ti
Chromium 17.69 % Cr
Iron 4.75 % Fe
Oxygen 34.48 % O
Empirical Formula:
Ba0.75Sr0.25Ti13Cr6Fe2+1.5Mg0.5O38
Environment:
In kimberlite and peridotite nodules.
IMA Status:
Approved IMA 1983
Locality:
DeBeers mine, Kimberley, Cape Province, South Africa.
Name Origin:
Named for Donald H. Lindsley (1934-), mineralogist, Department of Earth Sciences, State University of New York at Stony Brook.
Physical Properties:
Cleavage:
None
Color:
black.
Density:
4.63
Diaphaniety:
Opaque
Habits:
Microscopic Crystals - Crystals visible only with microscopes., Aggregates - Made of numerous individual crystals or clusters.,
Hardness:
7.5 - Garnet
Luster:
Metallic
Streak:
gray
More details...