General Information:
Chemical Formula:
TlFe2S3
Composition:
(Molecular Weight = 412.28 gm)
Thallium 49.57 % Tl
Iron 27.09 % Fe
Sulfur 23.33 % S
Empirical Formula:
TlFe2+2S3
IMA Status:
Approved IMA 1970
Locality:
Allchar, Macedonia.
Name Origin:
Named for Paul Picot (1931-), French mineralogist.
Physical Properties:
Color:
bronze.
Density:
5.2
Diaphaniety:
Opaque
Habits:
Microscopic Crystals - Crystals visible only with microscopes., Pseudo Hexagonal - Crystals show a hexagonal outline., Platy - Sheet forms (e.g. micas).
Hardness:
2 - Gypsum
Luster:
Metallic
More details...