View allAll Photos Tagged Periphery
Periphery
@ The Wiltern
Los Angeles, CA
November 24, 2017
All Photos © Kaley Nelson Photography - www.KaleyNelson.com
Periphery | 9:30 Club, Washington, DC | November 11, 2009
Opening for Lamb of God.
Please do not use without permission.
Black areas along periphery = chalcocite (Cu2S)
Grayish-white = calcite (CaCO3)
Pinkish-brown to whitish at bottom margin = quartz (SiO2)
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A mineral is a naturally-occurring, solid, inorganic, crystalline substance having a fairly definite chemical composition and having fairly definite physical properties. At its simplest, a mineral is a naturally-occurring solid chemical. Currently, there are over 6000 named and described minerals - about 200 of them are common and about 20 of them are very common. Mineral classification is based on anion chemistry. Major categories of minerals are: elements, sulfides, oxides, halides, carbonates, sulfates, phosphates, and silicates.
The sulfide minerals contain one or more sulfide anions (S-2). The sulfides are usually considered together with the arsenide minerals, the sulfarsenide minerals, and the telluride minerals. Many sulfides are economically significant, as they occur commonly in ores. The metals that combine with S-2 are mainly Fe, Cu, Ni, Ag, etc. Most sulfides have a metallic luster, are moderately soft, and are noticeably heavy for their size. These minerals will not form in the presence of free oxygen. Under an oxygen-rich atmosphere, sulfide minerals tend to chemically weather to various oxide and hydroxide minerals.
Chalcocite is a significant copper ore mineral having the formula Cu2S - copper sulfide. It has a metallic luster, a dark gray to black color and streak, no obvious cleavage, is moderately heavy for its size, and is moderately soft (H = 2.5 to 3). Chalcocite is found with other copper minerals such as chalcopyrite. It usually forms in the near-surface, secondary enrichment zone at and below the water table, in areas having copper mineralization. It also occurs as a primary mineral in some hydrothermal veins.
The specimen seen here is from northern Michigan's White Pine Mine and was hosted by the Nonesuch Formation, a 1.07 to 1.08 billion years old, nonmarine, mixed siliciclastics unit. The Nonesuch Formation here has been partially mineralized with native copper (fracture fillings or scattered, small, intergranular masses or partially replacing bulk rocks) and chalcocite.
Locality: main ore body of the White Pine Mine, Upper Peninsula of Michigan, USA
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Locality info. at:
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Photo gallery of chalcocite:
Periphery | 9:30 Club, Washington, DC | November 11, 2009
Opening for Lamb of God.
Please do not use without permission.
Periphery
@ The Wiltern
Los Angeles, CA
November 24, 2017
All Photos © Kaley Nelson Photography - www.KaleyNelson.com
Copyright, please do not use without written consent. If you would like to have use of one of my images for a publication, gallery,or otherwise please email info@shutter16.com for information on obtaining use.
Photographer: David Zeck
MONTREAL, QUE.: August 11, 2012-- Periphery perform during the first day of Heavy MTL on Parc Jean Drapeau in Montreal on Saturday August 11, 2012. (Tim Snow /evenko)
Wovenwar support Periphery on the Juggernaut Tour. mikevictorick.com fb.com/mikevictorick twitter.com/mike_victorick instagram.com/mikevictorick
Periphery
@ The Wiltern
Los Angeles, CA
November 24, 2017
All Photos © Kaley Nelson Photography - www.KaleyNelson.com
MONTREAL, QUE.: August 11, 2012-- Periphery perform during the first day of Heavy MTL on Parc Jean Drapeau in Montreal on Saturday August 11, 2012. (Tim Snow /evenko)
Periphery & Animals As Leaders @ Brooklyn Bowl 11.22.2017
2017 © Fred Morledge - www.PhotoFM.com
For licensing or prints of these images, please contact Fred@PhotoFM.com