ClassicGems.net :: Troostite

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Troostite (a variety of Willemite) Current inventory: 0 gems

Troostite was named in 1832 by American mineralogist Charles Upham Shepard (1804-1886) in honor of Dr. Gerard Troost (1776-1850), State Geologist of Tennessee.

Discovered in 1832; IMA status: Not Valid (a variety of Willemite)

*Chemistry*
*Chemistry*
Chemical Formula:	(Zn,Mn)₂Sio₄
	Zinc Manganese Silicate


*More Information*
*More Information*
	Troostite is a variety of Willemite. For more information please see the Willemite information page.
	Mindat.org (Troostite) Mindat.org (Willemite) Webmineral.com (Willemite)
View mineral photos:	Troostite Mineral Photos and Locations

Troostite is a brownish red zinc manganese silicate mineral that is a variety of Willemite in which some of the zinc is replaced by manganese. The addition of manganese gives Troostite its brownish red color. As with Willemite, Troostite fluoresces bright green under short wave UV light and dull green under long wave UV light. The only two locations for Troostite are Franklin and Sterling Hill, New Jersey, USA.

Troostite gems for sale:

Troostite-001

Gem:	Troostite
Stock #:	TROO-001
Weight:	1.0275 ct
Size:	6.24 x 6.18 x 3.72 mm
Shape:	Trillion
Color:	Brownish Red
Clarity:	Translucent
Origin:	Sterling Hill, New Jersey
Treatment:	None (natural)
Price:	SOLD
Pictures are of the actual gem offered for sale. Gem images are magnified to show detail.

Troostite-001

This rare gem is from the Sterling Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex County, New Jersey, USA. The second picture was taken under short wave UV light.