Aragonite and calcite with botryoidal side Sputnik aragonite Wulfenite from the Glove Mine

Wulfenite from the Glove Mine commonly is also commonly a dark brown-black

Limit handling and do not place stress on repair joints

Approx size and weight 3/4–1 1/3 lb

***The "crack" visible in images is a natural plane through the sandstone that is semi-stable

Aragonite and calcite with botryoidal side Sputnik aragonite Wulfenite from the Glove MineLocale: Sidi Ayed, Fs Mekns Region, Morocco Approx dimensions: 2. 25 x 2 x 1. 5" Approx size: 185g 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