Chekhovichite

Formula:  Bi₂Te₄O₁₁

Origin of name:  For S. K. Chekhovich, Kazakhstan scientist

Crystal system:  Monoclinic

Crystal class:  2/m

Twinning:

Unit cell:

Colour:  Greyish, yellow, white, greenish

Diaphaneity:  Semi-transparent

Luster:  Adamantine

Habit:  Grains to 0.1 mm forming aggregates and crusts

Hardness:  4

Specific gravity:  6.88

Cleavage:  1; perfect

Tenacity:

Streak:  White

Synonyms/varieties:

Comments: