How do I identify Magnesio-hornblende?

Magnesio-hornblende can be identified by its hardness of 5 - 6 on the Mohs scale, Medium green to dark green to green-black to black color. Look for these key characteristics when examining specimens.

What color is Magnesio-hornblende?

Magnesio-hornblende typically appears in Medium green to dark green to green-black to black, brown. Color can vary depending on impurities and formation conditions.

How hard is Magnesio-hornblende?

Magnesio-hornblende has a hardness of 5 - 6 on the Mohs scale. This gives it moderate hardness.

Magnesio-hornblende

A variety of Minerals

What is Magnesio-hornblende?

Magnesio-hornblende Market Value Calculator

Estimate the market value of Magnesio-hornblende using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Magnesio-hornblende Localities Map

See where Magnesio-hornblende is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview

North ZoneCentral RidgeSouth Basin

Quick Facts

Physical Properties

Color: Medium green to dark green to green-black to black, brown
Hardness (Mohs): 5 - 6
Streak: Pale grey-green, grey-white

Chemical Properties

Chemical Formula: ☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2 Defined as a an amphibole in the magnesiohornblende group of the Calcium subgroup with Mg>Fe2+ and Al>Fe3+ in the C position and with (OH) as the dominant anion in the W position.
Elements: Al, Ca, H, Mg, O, Si