Difference between revisions of "Bassanite"
Jump to navigation
Jump to search
(username removed) |
(username removed) |
||
| Line 1: | Line 1: | ||
== Description == | == Description == | ||
| − | A naturally occurring mineral composed of an intermediate hydrate form of calcium sulfate that lies between the dihydrate ([http://cameo.mfa.org/materials/fullrecord.asp?name=gypsum gypsum]) and the anhydrous ([http://cameo.mfa.org/materials/fullrecord.asp?name=anhydrite anhydrite]) states. Synthetic particles of bassanite occur when gypsum is calcined to form [http://cameo.mfa.org/materials/fullrecord.asp?name=plaster | + | A naturally occurring mineral composed of an intermediate hydrate form of calcium sulfate that lies between the dihydrate ([http://cameo.mfa.org/materials/fullrecord.asp?name=gypsum gypsum]) and the anhydrous ([http://cameo.mfa.org/materials/fullrecord.asp?name=anhydrite anhydrite]) states. Synthetic particles of bassanite occur when gypsum is calcined to form [http://cameo.mfa.org/materials/fullrecord.asp?name=plaster%20of%20Paris plaster of Paris]. |
== Other Properties == | == Other Properties == | ||
Revision as of 06:23, 24 July 2013
Description
A naturally occurring mineral composed of an intermediate hydrate form of calcium sulfate that lies between the dihydrate (gypsum) and the anhydrous (anhydrite) states. Synthetic particles of bassanite occur when gypsum is calcined to form plaster of Paris.
Other Properties
Microscopically similar to gypsum and plaster of Paris
| Composition | CaSO4-xH2O |
|---|---|
| Refractive Index | 1.55, 1.57 |