Calcite on Prehnite Crystal Cluster | Double Terminated Calcite | 77 grams | Mumbai, India | SO24 Morganite It often forms as prismatic

It often forms as prismatic crystals with a square or rectangular cross-section

Size: 17 mm

Dimensions: 57x59x36 mm / 2

Dimensions: 190x110 mm / 7

Calcite on Prehnite Crystal Cluster | Double Terminated Calcite | 77 grams | Mumbai, India | SO24 Morganite It often forms as prismaticCalcite is found throughout the world in sedimentary, metamorphic, and igneous rocks. Some geologists consider it to be a "ubiquitous mineral" one that is found everywhere. Calcite is the principal constituent of limestone and marble. On this particular specimen there are 2 double terminated calcite points. Penhnite can form prismatic, tabular, or pyramidal crystals, but usually occurs in botryoidal, reniform, stalactitic, granular, or compact habits.