Edoylerite

Formula:   Hg₃CrO₄S₂

Origin of name:   For Ed Oyler, American mineral collector

Crystal system:   Monoclinic

Crystal class:   2/m

Twinning:

Unit cell: 

Colour:  Canary to orange-yellow

Diaphaneity:  Transparent to translucent

Luster:   Adamantine

Habit:   Elongate crystals to 0.5 mm in stellate to acicular groups

Hardness:

Specific gravity:   7.13

Cleavage:   2; {010} good, {101} fair

Tenacity: 

Streak:   Yellow

Synonyms/varieties:

Comments:   Photosensitive, turns olive green after few months