Granules of this mineral are often found in the vacuoles of the Closterium genus of algae.
Granules of this mineral are often found in the vacuoles of the Closterium genus of algae. This mineralcan form from tiny crystals of bassanite. An extremely pure form of this mineral is mined at Fort Dodge,Iowa. The largest crystals in the world are made of a clear variant of this mineral and are found in theMexican Naica mine. When it has a fibrous appearance, it is known as satin spar. This mineral can beformed from the hydration of anhydrite. Its variants include selenite and alabaster and it is the mostcommon sulfate mineral. For 10 points, name this mineral with a Mohs hardness of 2, also known ashydrous calcium sulfate and used in drywall.
Granules of this mineral are often found in the vacuoles of the Closterium genus of algae.
gypsum [or calcium sulfate dehydrate before mentioned]