Become A Member For Free Here
Hornblende
Hornblende is a complex inosilicate series of minerals. It is not a recognized mineral in its own right, but the name is used as a general or field term, to refer to a dark amphibole. Hornblende minerals are common in igneous and metamorphic rocks.
Colors It Comes In - Black to dark green or brown
Fracture Pattern - subconchoidal and uneven
Shape - Hexagonal/granular
Luster - Vitreous to dull
Texture - irregular grains or fibrous masses
Where It Can Be Found - Hornblende is a very common mineral found in many geologic environments. It is found in many intrusive igneous rocks ranging in composition from granites to diorite to gabbros to syenites. It occurs as phenocrysts in several varieties of extrusive igneous rocks, such an andesite.
Hardness On The Mohs Scale - 5 To 6 Out Of 10
