1) Orthorhombic mineral
Found on
https://www.crosswordclues.com/clue/rapidcreekite
Rapidcreekite is a rare mineral with formula Ca2(SO4)(CO3)·4H2O. The mineral is white to colorless and occurs as groupings of acicular (needle-shaped) crystals. It was discovered in 1983 in northern Yukon, Canada, and described in 1986. Rapidcreekite is structurally and compositionally similar to gypsum. Rapidcreekite is transparent and white to ...
Found on
http://en.wikipedia.org/wiki/Rapidcreekite
No exact match found.
