Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A variously colored mineral, CaWO4, found in igneous rocks and used as an ore of tungsten.
from The Century Dictionary.
- noun Native calcium tungstate, a mineral of high specific gravity, occurring in tetragonal crystals which often show hemihedral modifications, also massive, of a white, yellowish, or brownish color, and vitreous to adamantine luster.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Min.) Calcium tungstate, a mineral of a white or pale yellowish color and of the tetragonal system of crystallization.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy A
mineral composed ofcalcium tungstate , with thechemical formula Ca W O 4; an importanttungsten ore .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a mineral used as an ore of tungsten
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
Support
Help support Wordnik (and make this page ad-free) by adopting the word scheelite.
Examples
-
Hundreds of fossils are locked in glass cases, specimens from all over southern Africa: shells and worms and nautiluses and seed ferns and trilobites, and minerals, too; yellow-green crystals and gleaming clusters of quartz; mosquitoes in drops of amber; scheelite, wulfenite.
Memory Wall Anthony Doerr 2010
-
Hundreds of fossils are locked in glass cases, specimens from all over southern Africa: shells and worms and nautiluses and seed ferns and trilobites, and minerals, too; yellow-green crystals and gleaming clusters of quartz; mosquitoes in drops of amber; scheelite, wulfenite.
Memory Wall Anthony Doerr 2010
-
(As an aside, the mineral scheelite (Ca (WO4, MoO4), calcium tungstate-molybdate) was named after Scheele in honor of his discovery of molybdenum.)
Molybdenum 2008
-
Tungsten is retrieved from the ore minerals scheelite (CaWO4, calcium tungstate) and wolframite ((Fe, Mn) WO4, iron-manganese tungstate).
Tungsten 2008
-
Another mining sector which employs optical evaluation is scheelite mining, where the mine face is irradiated with an ultra-violet lamp which induces fluorescence of the scheelite.
Chapter 6 1993
-
This is especially important for those valuable minerals which exhibit a brittle to very brittle tenacity, such as cassiterite, sphalerite and the tungsten minerals scheelite and wolframite.
Chapter 20 1993
-
Sphalerite, cassiterite (tin ore) and scheelite are only a few examples of this type of brittle mineral ore (see Table).
Chapter 20 1993
-
Tungsten ores contain tungsten principally in the form of the minerals scheelite (calcium tungstate), ferberite (iron tungstate), hübnerite
-
In these occurrences the tungsten mineral is almost invariably scheelite, and is associated with calcite, garnet, pyroxene, and other silicates.
-
Both wolfram and scheelite are of considerable importance as a source of tungstic acid for the manufacture of sodium tungstate, which is used as a mordant and for some other purposes, and as a source of metallic tungsten, which is used in steel-making.
A Text-book of Assaying: For the Use of Those Connected with Mines. Cornelius Beringer 1886
Comments
Log in or sign up to get involved in the conversation. It's quick and easy.