Palenzonaite

Formula: Ca₂NaMn₂(VO₄)₃

Origin of name: for A. Palenzona, Italian discoverer of mineral

Crystal system: cubic

Crystal class: 4/m -3 2/m

Twinning:

Unit cell: 

Colour: wine-red

Diaphaneity: 

Luster: adamantine

Habit: anhedral grains and dodecahedral crystals to 6 mm, forming veinlets

Hardness: 5 to 5.5

Specific gravity: 3.63

Cleavage: none

Tenacity: 

Streak: brownish red

Synonyms/varieties:

Comments: structurally related to garnet, berzeliite and manganberzeliite