What is anhydrite mineral group?
Anhydrite is an evaporite mineral that occurs in extensive layered deposits in sedimentary basins where large volumes of sea water have been evaporated. It is typically interbedded with rocks that include halite, gypsum, and limestone. These accumulations can be hundreds of feet thick.
How is anhydrite formed?
A member of the evaporite group of minerals and the soft rock comprising anhydrite formed by precipitation of calcium sulfate from evaporation of seawater. Anhydrite can also form through the dehydration of gypsum, another sulfate mineral found in evaporites. Anhydrite may occur as a caprock above salt domes.
What is the density of anhydrite?
2.97 gm/cc
Anhydrite Mineral Data
| General Anhydrite Information | |
|---|---|
| Chemical Formula: | CaSO4 |
| Pleochroism (y): | colorless. |
| Calculated Properties of Anhydrite | |
| Electron Density: | Bulk Density (Electron Density)=2.97 gm/cc note: Specific Gravity of Anhydrite =2.97 gm/cc. |
What mineral group does apatite belong to?
Phosphate mineral
Apatite
| Apatite group | |
|---|---|
| Category | Phosphate mineral |
| Formula (repeating unit) | Ca5(PO4)3(F,Cl,OH) |
| Strunz classification | 8.BN.05 |
| Crystal system | Hexagonal |
What is the chemical formula of sylvite?
KCl
Sylvite, or sylvine, is potassium chloride (KCl) in natural mineral form. It forms crystals in the isometric system very similar to normal rock salt, halite (NaCl). The two are, in fact, isomorphous….
| Sylvite | |
|---|---|
| Category | Halide mineral |
| Formula (repeating unit) | KCl |
| Strunz classification | 3.AA.20 |
| Crystal system | Isometric |
What is anhydrite flooring?
Anhydrite screeds are a mixture of screeding sand and binder. If tilers are unsure of whether the screed they’re to work on is, or isn’t, anhydrite, they should always ask. Information about the screed should be kept in the building owner’s Operation and Maintenance Manual.