Minerals identify

Know how to recognize them

Magnesiohastingsite

Amphibole

Magnesiohastingsite is a calcium and a member of the hornblende (chain silicate) with the formula NaCa2(Mg4Fe3+)(Si6Al2)O22(OH)2 864.69 g. In synthetic magnesiohastingsite it appears that iron occurs both as ferrous iron Fe2+ and as ferric iron Fe3+, but the ideal formula features only ferric iron. It was named in 1928 by Marland P. Billings. The name is for its relationship to hastingsite content. Hastingsite was named for the locality in Dungannon Township, Hastings County

Calcic (containing calcium) amphiboles include: * The tremolite – ferro-actinolite series * The hornblende group * The kaersutite – ferro-kaersutite series * Joesmithite

The hornbende group includes: * The edenite – ferro-edenite series * The tschermakite – ferrotschermakite series * The pargasite – ferro-pargasite series * The magnesiohastingsite – hastingsite series * The magnesiosadanagaite – sadanagaite series

Identification

Color of mineral

Green
Black

Mohs scale ( mineral hardness )

5

The streak

Grey
Brown
Green

Luster ( interacts light )

Vitreous

Crystal ( diaphaneity )

Monoclinic