from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A yellow, white, or colorless crystalline mineral of barium sulfate, BaSO4, that is used in paint and as the chief source of barium chemicals. Also called heavy spar.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A mineral, barium sulphate, with the chemical formula BaSO4.
from the GNU version of the Collaborative International Dictionary of English
- n. Native sulphate of barium, a mineral occurring in transparent, colorless, white to yellow crystals (generally tabular), also in granular form, and in compact massive forms resembling marble. It has a high specific gravity, and hence is often called heavy spar. It is a common mineral in metallic veins.
from The Century Dictionary and Cyclopedia
- n. Native barium sulphate: also called barytes and heavy-spar, because of its high specific gravity.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a white or colorless mineral (BaSO4); the main source of barium
About 200 are involved in exploration, and about 40 are running mines that are producing gold, silver, lead and other minerals including barite, which is used in oil and gas exploration.
In this case, the loss involved the drilling mud (water and clay with dense additives such as barite or hematite) that we've all heard so much about.
A spokesman for Calgary-based Blackfire Exploration Ltd. confirmed that an employee, a former employee and a one-time company contractor were arrested in the Nov. 27 murder of Mariano Abarca Robledo, who had led local opposition against Blackfire's barite mine in Chicomuselo, Chiapas. (south of Comitan)
If they started a draw via that DP they could then dump a wet barite slug no gel to settle and plug up the broken riser.
Land use is mainly timber and recreation, with some pastureland for grazing, and barite and iron mining in the southeast.
Currently, the majority of barite consumption in the United States is for this drilling application.
Some smaller mines utilize barite from veins, which formed when barium sulfate was precipitated from hot subterranean waters.
Most barite is mined from layers of sedimentary rock which formed when barite precipitated onto the bottom of the ocean.
China produces nearly ten times as much barite as the U.S., and India also produces more.
Many barite deposits are known worldwide, but some are uneconomic because barite can be mined more cheaply in China.