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Latest Economic geology Stories

2015-03-25 08:25:14

VANCOUVER, March 25, 2015 /PRNewswire/ - Sarama Resources Ltd ("Sarama" or the "Company") and Acacia Mining plc ("Acacia") entered in to an Earn-In Agreement ("Agreement")

2015-03-25 08:24:08

Estimated 164 million tonne inferred resource averages 0.59 g/T gold and 0.27% copper 2014 drilling adds total inferred resources of 5.4 million oz gold and 4.2 billion lbs copper Trading

2015-03-25 08:23:43

TSX:ORV TORONTO, March 25, 2015 /PRNewswire/ - Orvana Minerals Corp. (TSX:ORV) (the "Company" or "Orvana") is pleased to announce that Ms.

2015-03-24 12:25:05

LORDSBURG, N.M., March 24, 2015 /PRNewswire/ -- Santa Fe Gold Corporation (OTC: SFEG) is pleased to announce that it staked and filed an additional 88 mineral claims immediately adjacent

mining gold
2015-03-24 11:53:20

According to new research just presented at the 249th national meeting of the American Chemical Society in Denver, there are enough gold particles in solid human waste that it would be profitable to mine municipal sewage facilities.

2015-03-23 12:24:41

SCOTT DEPOT, W.Va., March 23, 2015 /PRNewswire/ -- Patriot Coal Corporation (OTC Pink: PATCA) today announced that its Paint Creek Complex has temporarily idled coal production at both the Samples

2015-03-19 08:22:34

LONDON, March 19, 2015 /PRNewswire/ -- In August 2014, BHP Billiton (BHPB) announced that it intended to demerge its aluminium, coal, manganese, nickel and silver assets

2015-03-18 08:23:31

VANCOUVER, March 18, 2015 /PRNewswire/ - Rye Patch Gold Corp (TSX.V: RPM; OTCQX: RPMGF; FWB: 5TN) (the "Company" or "Rye Patch") announces it has received approval of its plan of operations

2015-03-17 12:22:56

BRISTOL, Va., March 17, 2015 /PRNewswire/ -- An employee of Rogers Petroleum, a fuel service contractor for Alpha Natural Resources, Inc.

2015-03-17 08:37:25

VANCOUVER, March 17, 2015 /PRNewswire/ - Tintina Resources Inc.


Latest Economic geology Reference Libraries

28_71c4ddf154b94f9ae30fda80d8080e32
2005-05-26 12:03:03

Bornite is a sulfide mineral with chemical composition Cu5FeS4 that crystallizes in the cubic system. It has a brown to copper-red color on fresh surfaces that tarnishes to an iridescent purple surface. Its purple to bronze iridescence gives it the nickname peacock ore. Bornite is an important copper ore mineral and occurs widely in porphyry copper deposits along with more common chalcopyrite. It also is found in pegmatites. It is important for its copper content of about 63 percent by mass...

28_2ed8636e187bcb1f5dad0d65027dc1b5
2005-05-26 11:58:03

Cassiterite is a tin oxide mineral, SnO2. It is generally opaque, but is translucent in thin crystals. Its luster and multiple crystal faces produce a desirable gem. Cassiterite is the chief ore of tin today. Most sources of cassiterite today are found in alluvial or placer deposits containing the resistant weathered grains. The best source of primary cassiterite is the tin mines of Bolivia, where it is found in hydrothermal veins. Cassiterite is a widespread minor constituent of igneous...

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...

28_30e4ecba792d2b734beb4d32901c1f58
2005-05-26 10:41:56

Hematite (AE) or haematite (BE) is the mineral form of Iron (III) oxide, (Fe2O3), one of several iron oxides. The ore sometimes contains slight amounts of titanium. When shaped into ornaments, it is often called black diamond. Hematite is a very common mineral, coloured black to steel or silver-gray, brown to reddish brown, or red. It is mined as the main ore of iron. Varieties include Bloodstone, Iron Rose, Kidney Ore, Martite, Paint Ore, Specularite (Specular Hematite), Rainbow Hematite...

28_0ac371f570a8e0129ff11833b1cf20c7
2005-05-26 09:20:28

Magnetite is a magnetic mineral form of both iron(II) oxide and iron(III) oxide or (iron(II,III) oxide), with chemical formula Fe3O4, one of several iron oxides and a member of the spinel group. Magnetite is the most magnetic of all the minerals on Earth, and these magnetic properties led to lodestone being used as an early form of magnetic compass. Small grains of magnetite occur in almost all igneous rocks and metamorphic rocks as well as many sedimentary rocks. Magnetite is a...

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Word of the Day
gammon
  • To play, gamble.
  • To impose upon; delude; trick; humbug; also, to joke; chaff.
  • A deceitful game or trick; trickery; humbug; nonsense.
The word 'gammon' in the sense of 'joke, trick' may come from 'backgammon'.
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