Minerals identify

Know how to recognize them

Åkermanite

Sorosilicates

Åkermanite (Ca2Mg mineral of the sorosilicate, silicon. It is a product of contact metamorphism and dolomites , and rocks of sanidinite facies. Sanidinite facies represent the highest conditions of temperature of contact metamorphism and are characterized by the absence of hydrous minerals. It has a density of 2.944 g/cm3. Åkermanite ranks a 5 or 6 on the Mohs scale of mineral hardness, and can be found gray, green, brown, or colorless. It has a white streak and a vitreous or resinous luster crystal system and a good, or distinct, cleavage. It is the end member series beginning with gehlenite

The mineral is named for Anders Richard Åkerman (1837–1922), a Swedish metallurgist. It has been found at Monte Somma and Vesuvius near Rome. It was "grandfathered" in as a species of mineral because it was described prior to 1959, before the founding of the International Mineralogical Association

Identification

Color of mineral

Grey
Yellow
Green
Brown

Mohs scale ( mineral hardness )

5

Density ( specific gravity )

1.632
1.64

Luster ( interacts light )

Vitreous
Resinous

Crystal ( diaphaneity )

Tetragonal