Minerals identify

Know how to recognize them

Onyx

Oxide mineral

Onyx primarily refers to the parallel banded variety of the silicate mineral and onyx are both varieties of layered chalcedony that differ only in the form of the bands: agate has curved bands and onyx has parallel bands. The colors of its bands range from black to almost every color. Commonly, specimens of onyx contain bands of black and/or white. Onyx, as a descriptive term, has also been applied to parallel banded varieties of alabaster, marble, obsidian and opal, and misleadingly to materials with contorted banding, such as "Cave Onyx" and "Mexican Onyx".

Identification

Mohs scale ( mineral hardness )

6.5

Density ( specific gravity )

1.53

Luster ( interacts light )

Vitreous
Silky

Crystal ( diaphaneity )

Trigonal