grunerite


Also found in: Wikipedia.

grunerite

[′grün·ə‚rīt]
(mineralogy)
(Mg,Fe)7Si8O22(OH)2 Variety of amphibole; forms monoclinic crystals.
References in periodicals archive ?
In Gwynedd, PS539,130 has been spent on removal with all three of the major types of asbestos - crocidolite, grunerite and chrysotile - having been found within its buildings.
5 mi (14 km) distance, within chert-oxyde- grunerite, gold-bearing iron formations.