Holtite

A variety of Minerals

What is Holtite?

Holtite Market Value Calculator

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

Preview only. Full pricing comps and valuation report in the app.

Holtite Localities Map

See where Holtite 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.

Quick Facts

Physical Properties

Color
Light buff to cream-buff, deep olive-buff, brown, russet
Hardness (Mohs)
8.5
Density
3.6 - 3.9 g/cm³
Streak
Light buff

Chemical Properties

Chemical Formula
(Ta0.6◻0.4)Al6BSi3O18(O,OH)2.25 Originally assumed to be Al6(Al,Ta)(SiO4,SbO4,AsO4)3(BO3)O3.
Elements
Al, B, O, Si, Ta
FREE APP
4.7
Ruby Glint rock identifier app

Identify Holtite Instantly

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