Hackmanite | Afghanistan Iceland Spar Calcite Stromatolites are layered colonial sedimentary

Stromatolites are layered colonial sedimentary structures predominantly formed by photosynthetic microorganisms

125” x 2

625" and weighs  1

but other important localities include Burma

This item is 5” x 4” and weighs 16

Hackmanite | Afghanistan Iceland Spar Calcite Stromatolites are layered colonial sedimentaryHackmanite is a fluorescent, phosphorescent and also tenebrescent (reversible photochromism) mineral found in Afghanistan. It can be deep pink, blue, or purple but quickly fades to colorless when exposed to sunlight. The original color can be restored quickly by exposure to short wave ultraviolet light, or more slowly by storing it in a dark space. This item comes in a perky box with 3 pieces included and weighs 0. 3 oz (5 of 5 for store purposes only)