Commodity Code

anhydrite

http://resource.geosciml.org/classifier/cgi/commodity-code/anhydrite

definition Anhydrite is a relatively common sedimentary mineral that forms massive rock layers. Anhydrite does not form directly, but is the result of the dewatering of the rock forming mineral Gypsum (CaSO4-2H2O). This loss of water produces a reduction in volume of the rock layer and can cause the formation of caverns as the rock shrinks. more like this
notation
01.02.15.01 more like this
Anhd more like this
source http://www.galleries.com/Anhydrite more like this
type
Resource
Concept
broader evaporite
narrower anhydrite
in scheme commodity code
is primary topic of anhydrite