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Latest Bristol Stories

2014-12-01 08:23:57

Antioquia, Bristol, Hangzhou clinched double titles; Christchurch, Dakar also honoured for shareable and practical urban innovations GUANGZHOU, China, Dec.

2014-11-18 08:38:45

BRISTOL, England, November 18, 2014 /PRNewswire/ -- Acquisition will accelerate product development and seize the market opportunity

2014-11-05 23:10:24

Nursing Home Skincare Line Expands Gentell Line of Products Bristol, Pennsylvania (PRWEB) November 05, 2014 Gentell Executive Vice President and Founder

2014-10-23 08:23:02

Dealership offers 2015 model year BRISTOL, Tenn., Oct.

2014-09-16 12:35:04

Passive RFID IT Asset Management Solutions Company Says Don't Roll the Dice with Data Center Fundamentals BRISTOL, Pa., Sept.

2014-08-21 16:26:55

Relationship will streamline organizations' global operations HAMPTON, N.H. & BRISTOL, United Kingdom, Aug.

2014-07-08 23:09:27

WITTENSTEIN high integrity systems have released a range of middleware that is supplied integrated with FreeRTOS, including USB, TCP/IP and File Systems. Bristol,

2014-06-24 12:33:57

White Paper Compares High Costs of Manual IT Asset Management to Passive RFID IT Asset Management for Eye Opening Savings; Four Cost Points to Consider in a Data Center Audit BRISTOL, Pa.,

2014-06-10 16:25:12

NASHVILLE, Tenn., June 10, 2014 /PRNewswire/ -- Tourism and music industry representatives gathered today for a special press conference to officially announce the August 2 grand opening of


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
bretelles
  • In dressmaking, straps running from the belt in front over the shoulders to the belt in the back, with more or less elaboration of trimming and outline. They usually broaden at the shoulder and narrow toward the waist.
The word 'bretelles' comes from a French word meaning 'braces'.