Aragonite and calcite with botryoidal side Inner Mongolian quartz I call this one "the

I call this one "the whale"

The crystals are attached to a matrix of light-colored grainy rock

it is more appropriately called hedenbergite quartz

265g  C 5

this piece has well-formed crystals with beautiful geometry

Aragonite and calcite with botryoidal side Inner Mongolian quartz I call this one "theLocale: Sidi Ayed, Fs Mekns Region, Morocco Approx dimensions: 3 x 2. 75 x 2" Approx size: 480g (1 lb) Calcite and aragonite are polymorphs of one another, meaning that the same chemical composition (calcium carbonate) has crystallized into different crystal structures (trigonal and orthorhombic, respectively). Calcite and aragonite often grow together, and the two minerals are also frequent paramorphs of one anothera pseudomorph of the same chemical