Harmotome
A variety of Minerals
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.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Harmotome before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Harmotome Localities Map
See where Harmotome is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
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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
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Harmotome FAQs
How do I identify Harmotome?
Harmotome can be identified by its hardness of 4 - 5 on the Mohs scale, Colorless color. Look for these key characteristics when examining specimens.
What color is Harmotome?
Harmotome typically appears in Colorless, white, grey, pink, yellow, brown. Color can vary depending on impurities and formation conditions.
How hard is Harmotome?
Harmotome has a hardness of 4 - 5 on the Mohs scale. This gives it moderate hardness.
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