Commodity Code

tremolite-actinolite

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

definition Tremolite is a member of the amphibole group of silicate minerals with composition: Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)2. Tremolite forms by metamorphism of sediments rich in dolomite and quartz. Tremolite forms a series with actinolite and ferro-actinolite. Pure magnesium tremolite is creamy white, but the color grades to dark green with increasing iron content. It has a hardness on Mohs scale of 5 to 6. Nephrite, one of the two minerals of the gemstone jade, is a green variety of tremolite more like this
notation
01.02.43 more like this
Trem more like this
source http://en.wikipedia.org/wiki/Tremolite more like this
type
Resource
Concept
broader industrial mineral
narrower tremolite actinolite
in scheme commodity code
is primary topic of tremolite actinolite