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Latest Bristol Stories

2012-04-30 13:20:26

Evidence that a Florentine merchant house financed the earliest English voyages to North America.

2012-03-17 23:02:18

Leading Inside Sales Company Continues NASCAR Sprint Cup Series Sponsorship Program Mooresville, NC (PRWEB) March 16, 2012 FAS Lane Racing is proud to

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.


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
ethnarch
  • The governor of a province or people.
The word 'ethnarch' comes from a Greek word meaning 'ruler of a tribe or nation'.
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