A mineral of a rhomboidal form and compact texture, of a gray or brown color, and nearly as hard as calcarious spar.
Word of the Day: Catachrestical
A mineral occurring in greenish gray six-sided prisms, having a greasy luster. It is probably a pseudomorph after elaeolite.
No thesaurus entries found for "Gieseckite".
No Bible verses found for "Gieseckite".