TOCHILINITE


Meaning of TOCHILINITE in English

General Information:

Chemical Formula:

6Fe0.9S·5(Mg,Fe++)(OH)2

Composition:

(Molecular Weight = 904.38 gm)

Magnesium 12.77 % Mg

Iron 51.56 % Fe

Hydrogen 0.22 % H

Sulfur 31.91 % S

Oxygen 3.54 % O

Empirical Formula:

9(Fe2+0.9)S95(Mg0.95)5(Fe2+0.05)(OH)2

Environment:

Ultramafic bodies, diamond pipes, and carbonaceous chondrite meteorites.

IMA Status:

Approved IMA 1971

Locality:

Mamonovo deposit, Voronezh.

Name Origin:

Named for Mitrofan S.Tochilin (1910-1968), Russian scientist.

Physical Properties:

Cleavage:

[001] Distinct

Color:

bronze black.

Density:

2.96 - 2.99, Average = 2.97

Diaphaniety:

Opaque

Habits:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Cylindrical - Shaped like a cylinder., Acicular - Occurs as needle-like crystals.

Hardness:

1-1.5 - Talc or a little harder

Luster:

Metallic

More details...

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