Advertising Information

Perfect Scheelite Crystals

The Mineral scheelite




Scheelite is an important ore mineral, and is well-known among collectors for its distinctly colored crystals associated with brilliant fluorescence. It forms a series with the rarer mineral Powellite, which contains molybdenum in place of the tungsten. Scheelite is named after the Swedish chemist Karl Wilhelm Scheele (1742-1786). Scheele is credited with the discovery of tungsten within the Scheelite.
Chemical Formula CaWO4
Composition Calcium tungstate, sometimes with some molybdenum
Variable Formula Ca(W,Mo)O4
Color Bright orange, yellow, brown, smoky brown, and tan. Rarely white, colorless, grayish-blue, purple, or pink.
Streak White to light yellow
Hardness 4.5 - 5
Crystal System Tetragonal
3D Crystal Atlas
(Click for animated model) 
Crystal Forms
and Aggregates
Most often as dipyramidal or pseudo-octahedral crystals. Crystals often have triangular growth layers. Aggregates include encrusting, grainy, and massive.
Transparency Transparent to translucent
Specific Gravity 5.9 - 6.1
Luster Adamantine or greasy
Cleavage 3,1;2,1
Fracture Conchoidal to uneven
Tenacity Brittle
Other ID Marks Strongly fluorescent bluish-white.
In Group Tungstates and Molybdates
Striking Features Weight, crystal habits, and fluorescence.
Environment In hornfels of contact metamorphic rock, in granite pegmatites, and in epithermal veins. Occasionally in alluvial deposits.
Rock Type Igneous, Metamorphic
Popularity (1-4) 2
Prevalence (1-3) 2
Demand (1-3) 1

Scheelite ON EBAY


USES
Scheelite is an important ore of Tungsten. Good crystals are rare and expensive, and highly desired by mineral collectors. Scheelite also makes an important mineral among fluorescent mineral collectors.

NOTEWORTHY LOCALITIES
The finest Scheelite crystals, often as bright orange pseudo-octahedrons on a Muscovite matrix, come from Mt. Xuebaoding, in Pingwu, Sichuan Province, China. Smoky crystals come from the Yaogangxian Mine, Chenzhou, Hunan Province, China. Outstanding, sharply crystallized pseudo-octahedral Scheelite crystals came from the Tae Hwa Mine, Neungam-ri, South Korea. Bright orange, sharp crystals, resembling those of Pingwu, have been found at Gharmung, in the Skardu District, Pakistan.

A uniquely colored, dark grayish-blue form of Scheelite came from Baia Sprie (Felsöbánya), Maramures, Romania; and fleshy-colored dipyramidal crystals from Traversella, Torino Province, Italy. A deep orange Scheelite came from the Morro Velho Mine, Nova Lima, Minas Gerais, Brazil; and extremely large crystals were found in the Turmalina Mine, Piura, Peru.
 
In the U.S., brownish-orange floater crystals of Scheelite were found in the Cohen Mine, Cochise Co., Arizona. Brown, smoky crystals came from Camp Bird Mine, Ouray, Ouray Co., Colorado; and unique white and colorless crystals once came from the Greenhorn Mountains, Kern Co., California. White to light yellow Scheelite is well-known from Trumbull, Fairfield Co., Connecticut.

COMMON MINERAL ASSOCIATIONS
Quartz, Muscovite, Oligoclase, Beryl, Dolomite, Grossular, Epidote, Cassiterite, Wolframite, Apatite

DISTINGUISHING SIMILAR MINERALS
Fluorite - Much lower specific gravity.
Zircon and Spinel - Much harder, lack white fluorescence.


scheelite PHOTOS
 
ADDITIONAL RESOURCES
 
DISCUSSIONView Forum | Post to Forum
Have a question about Scheelite? Visit our Q&A Community and ask the experts!
PAGE SPONSOR  

To sponsor this page, click here.

Let us know how we can update this page
(Click for more details)
We strive for accurate content and locality information. If you feel any of the content is incorrect, or if you feel we are missing vital locality information, please fill out the form below so we can update the site. If you are requesting a locality be added, please only include significant locality occurences for the mineral.