Harmotome

A variety of Minerals

Harmotome specimen - rock identification

What is Harmotome?

Harmotome is a mineral, one of the rarer zeolites; a hydrated barium silicate with formula: (Ba0.5,Ca0.5,Na,K)5Al5,Si11O32·12(H2O). It forms vitreous white well defined monoclinic crystals, often associated with calcite and other zeolites. It has a Mohs hardness of 4 to 5 and a specific gravity of 2.44 to 2.5.

Harmotome Market Value Calculator

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

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Harmotome Localities Map

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

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

More Images

Harmotome specimen 2
© AnonymousUnknown author

Quick Facts

Physical Properties

Color
Colorless, white, grey, pink, yellow, brown
Hardness (Mohs)
4 - 5
Density
2.448 g/cm³
Streak
White

Chemical Properties

Chemical Formula
(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O
Elements
Al, Ba, Ca, H, K, Na, O, Si

Also Known As

HarmotomeAndréolitheBarytes Harmotome
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