-
Anhydrite, or
anhydrous calcium sulfate, is a
mineral with the
chemical formula CaSO4. It is in the
orthorhombic crystal system, with
three directions...
-
compound with the
formula CaSO4 and
related hydrates. In the form of γ-
anhydrite (the
anhydrous form), it is used as a desiccant. One
particular hydrate...
-
Acetic anhydride, or
ethanoic anhydride, is the
chemical compound with the
formula (CH3CO)2O.
Commonly abbreviated Ac2O, it is the
simplest isolable anhydride...
- evaporites. The most
common marine evaporites are calcite,
gypsum and
anhydrite, halite, sylvite, carnallite, langbeinite, polyhalite, and kainite. Kieserite...
- gypsum,
anhydrite, halite,
polyhalite Brine precipitate: Fe-montmorillonite, goethite, hematite, siderite, rhodochrosite, pyrite, sphalerite,
anhydrite. The...
- (350 °F), the
nearly water-free form,
called γ-
anhydrite (CaSO4·nH2O
where n = 0 to 0.05) is produced. γ-
anhydrite reacts slowly with
water to
return to the...
- The
drilling perforated an
anhydrite layer and
caused high-pressure
groundwater to come into
contact with the
anhydrite,
which then
began to expand....
-
found in
sedimentary rocks,
often ****ociated with the
minerals gypsum,
anhydrite, and halite. On
occasion in some localities, it may also be
found with...
- that the
drilling perforated an
anhydrite layer bringing high-pressure
groundwater to come into
contact with the
anhydrite,
which then
began to expand. Currently...
-
formed crystals and dis****d
grains often embedded within gypsum and
anhydrite crystals. It has a Mohs
hardness of 7 to 7.5 and a
specific gravity of...
