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Latest Bristol Stories

Unearthed Burial Grounds Provide Look Into Slave Trade
2012-03-11 06:05:15

A slave burial ground in St Helena has been unearthed and discovered by archeologists from the University of Bristol.

2012-02-25 09:00:00

Welshback Squash & Health Club is the latest gym in Bristol to join the rapidly-expanding payasUgym.com network.

2011-12-07 11:38:08

Injuries in the UK are having a much greater impact on peoples' lives than previously estimated, a study has found.

2011-08-17 10:30:00

ANCHORAGE, Alaska, Aug. 17, 2011 /PRNewswire/ -- The first poll of commercial fisherman in Alaska's Bristol Bay region found that an overwhelming majority - 85 percent - oppose the controversial Pebble Mine proposal.


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
edulcoration
  • The act of sweetening by admixture of some saccharine substance.
The word 'edulcoration' comes from a Latin word meaning 'making sweet'.