Satin spar in the context of "Satin"

Play Trivia Questions online!

 or

Skip to study material about Satin spar in the context of "Satin"

⭐ Core Definition: Satin spar

Satin spar, less commonly atlas spar, is a trivial, partly obsolete name for fibrous varieties of the minerals gypsum, calcite, and aragonite. Satin spars have a characteristic satin (silky) luster. Despite their very low hardness (2 or 3 on the Mohs scale), satin spars are widely used as ornamental stones.

Spar is a general term for glassy, transparent to translucent minerals that cleave easily. Satin spars are not related to other minerals containing spar in their names, such as feldspar and fluorspar.

↓ Menu

In this Dossier

Satin spar in the context of Calcium sulphate

Calcium sulfate (or calcium sulphate) is an inorganic salt with the chemical formula CaSO
4. It occurs in several hydrated forms; the anhydrous state (known as anhydrite) is a white crystalline solid often found in evaporite deposits. Its dihydrate form is the mineral gypsum, which may be dehydrated to produce bassanite, the hemihydrate state. Gypsum occurs in nature as crystals (selenite) or fibrous masses (satin spar), typically colorless to white, though impurities can impart other hues. All forms of calcium sulfate are sparingly soluble in water and cause permanent hardness when dissolved therein.

↑ Return to Menu
LINKED FROM (PARENTS)
← Calcium sulphate ← Calcium sulfate
LINKS TO (CHILDREN)
Gypsum → Trivial name → Calcite → Aragonite → Satin → Silk → Lustre (mineralogy) → Mohs scale → Spar (mineralogy) → Feldspar → Fluorspar →