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Latest Bristol Stories

2015-04-30 08:35:35

Country music royalty team up on album release on May 12 to honor "Big Bang of Country Music" in Bristol, VA/TN BRISTOL, VA/Tenn., April 30, 2015 /PRNewswire/ -- The

2015-04-28 12:21:40

Bill Gatton Honda offers huge savings on automotive service with printable online coupons BRISTOL, Tenn., April 28, 2015 /PRNewswire-iReach/ -- Spring weather has started to show itself

2015-04-09 20:23:17

WOKINGHAM, England, April 9, 2015 /PRNewswire/ -- Acal BFi [http://www.acalbfi.com/uk/?utm_source=pr&utm_medium=pr&utm_campaign=BristolIns771_mar15 ], the European

2015-03-31 16:23:59

Area drivers explore 2016 Honda Pilot, 2015 Honda Accord, Civic BRISTOL, Tenn., March 31, 2015 /PRNewswire-iReach/ -- One Tennessee Honda dealership is celebrating the new innovations

2015-03-04 12:28:13

BRISTOL, Tenn., March 4, 2015 /PRNewswire/ -- UPM Pharmaceuticals, a division of Gregory Pharmaceutical Holdings, Inc., has reached an agreement with Sprout Pharmaceuticals to manufacture Flibanserin

2015-02-27 08:21:09

Bill Gatton Honda explores 2015 Honda Civic, Odyssey, CR-V BRISTOL, Tenn., Feb.

2015-02-26 20:21:11

Four Key Partners Meet In London To Discuss Global Metro-Urban Challenges and Opportunities WASHINGTON, Feb.

2015-02-20 23:06:15

Gentell Founder David Navazio announced the opening of a West Coast Sales office and the appointment of Arnie Andersen to VP Western Sales.

2015-02-10 12:34:34

New RFID-based ITAM Solutions are Easier to Implement, Faster to Determine ROI BRISTOL, Pa., Feb.

2015-02-05 12:24:29

Beginning Today through March 6th, Fans Have Opportunity to Design Inaugural Battle at Bristol Trophy and Win Once-in-a-Lifetime Experience BRISTOL, Tenn., Feb.


Latest Bristol Reference Libraries

28_5f496c15049ba89cd8c43810810e311e
2005-05-26 11:32:33

Chalcocite, copper(I) sulfide (Cu2S), is an important copper mineral ore. It is opaque, being colored dark-gray to black with a metallic luster. It has a hardness of 2½ - 3. It is a sulfide with an orthorhombic crystal system. Chalcocite is sometimes found as a primary vein mineral in hydrothermal veins. However, most chalcocite occurs in the supergene enriched environment below the oxidation zone of copper deposits as a result of the leaching of copper from the oxidized minerals. It is...

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Word of the Day
sipe
  • a slit in a tire to drain away surface water and improve traction.
The word 'sipe' comes from Old English and is related to 'seep'.
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