How do I identify Graftonite-(ca)?

Graftonite-(ca) can be identified by its hardness of 5 on the Mohs scale, Brownish color. Look for these key characteristics when examining specimens.

What color is Graftonite-(ca)?

Graftonite-(ca) typically appears in Brownish. Color can vary depending on impurities and formation conditions.

How hard is Graftonite-(ca)?

Graftonite-(ca) has a hardness of 5 on the Mohs scale. This gives it moderate hardness.

Graftonite-(ca)

Graftonite-(Ca)

A variety of Minerals

What is Graftonite-(ca)?

Graftonite-(ca) Market Value Calculator

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

Graftonite-(ca) Localities Map

See where Graftonite-(ca) is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

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North ZoneCentral RidgeSouth Basin

Quick Facts

Physical Properties

Color: Brownish
Hardness (Mohs): 5

Chemical Properties

Chemical Formula: CaFe2+2(PO4)2 Structural formula (from type description):M(1)CaM(2),M(3)Fe2(PO4)2. The M(1) site is occupied dominantly by Ca, and the M(2) and M(3) sites are occupied by Fe2+ and Mn2+, with Fe2+ dominant over Mn2+ at the aggregate M(2) + M(3) sites.
Elements: Ca, Fe, O, P

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