Minerals identify

Know how to recognize them

Calderite

Silicate mineral

Calderite is a mineral group with the chemical formula (Mn 3+, Al 4)3.

It is dark reddish brown to dark yellowish in color and generally granular massive in form.

It was named for geologist James Calder who worked on the geology of India. The name was first applied to a rock in manganese deposits in Katkamsandi and at Netra, Balaghat district, Madhya Pradesh , India In 1909 it was described as a mineral from Otjosondu, Otjozondjupa Region, Namibia

Identification

Color of mineral

Red
Brown
Yellow

Mohs scale ( mineral hardness )

6.5
7.5

The streak

White

Density ( specific gravity )

1.872

Luster ( interacts light )

Vitreous

Crystal ( diaphaneity )

Cubic