Wawayandaite

Formula: Ca₁₂Mn₄B₂Be₁₈Si₁₂O₄₆(OH,Cl)₃₀

Origin of name: from the Lenni Lenape Native American word "wawayanda," many or several winding, in allusion to the grossly curved and winding habit of its crystals.

Crystal system: Monoclinic

Crystal class: m or 2/m

Twinning:

Unit cell: a = 15.59, b = 4.87, c = 18.69, β = 101.84°

Colour: Colourless, white

Diaphaneity: Transparent

Luster: Pearly, dull

Habit: mostly grossly curved and thin, rare as sharp, platy crystals to 0.1 mm across, thin tabular crystals

Hardness: 1

Specific gravity: 3.0

Cleavage: [100] perfect

Tenacity: 

Streak: White

Synonyms/varieties:

Comments: