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A lump of "black tin", so called because of its color; in this case it is cassiterite from Cornwall
Black tin is the raw ore of tin, usually cassiterite, as sold by a tin mine to a smelting company. After mining, the ore has to be concentrated by a number of processes to reduce the amount of gangue it contains before it can be sold. It contrasts with white tin, which is the refined, metallic tin produced after smelting.
The term "black tin" was historically associated with tin mining in Devon and Cornwall.
References [edit]
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Illawarra Mercury (blog)
Thu, 16 May 2013 06:53:35 -0700
Under the seat was a big round black tin that collected all the waste matter. Thinking about it now, sitting just inches above the accumulated excrement from yourself and your family over the past week, breathing its vapours and inhaling its odours ...
|  Rising Kashmir (press release) |
Rising Kashmir (press release)
Thu, 16 May 2013 18:16:58 -0700
As you enter the black tin gate in the lush green lawns, children are busy playing, paying little attention towards their elders. Their mothers, aunts are busy supplying spices to the cooks (Wazas) who in the other corner are giving final touches to ...
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National Business Review
Sat, 11 May 2013 15:07:54 -0700
While I'm always wary of getting involved in any conversation about security agencies and various tin-foil hat (black tin-foil hat, no less) conspiracies, I do object to having my right to privacy treated in a cavalier manner. Hopefully we can make ...
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The Sacramento Press
Thu, 09 May 2013 22:34:05 -0700
Alysia Chang creates a signature move -- an arm brought around the body to rest the hand upon the opposite hip -- in "Black Tin Box." Alex Biber moves three couples (Amanda Peet and Rex Wheeler, Alexandra Cunningham and Alex Stewart, and Julia ...
|  Inquirer.net |
Inquirer.net
Sat, 04 May 2013 14:04:33 -0700
Rouge, in a tiny black tin, she applied on her cheeks with a short fat camel-hair brush. Her clips and hairpins were in a red and black boat-shaped art nouveau glass container that I broke only last year. It once had a matching perfume atomizer and ...
|  Blogcritics.org (blog) |
Blogcritics.org (blog)
Tue, 30 Apr 2013 15:36:03 -0700
The Zig Carbon comes in a color scheme described by the manufacturer as excellent red, black, tin grey, and white. It's snappy and can be made even more so by pulling out the standard black laces and substituting the alternate pair of red laces ...
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Yahoo! Philippines News
Tue, 07 May 2013 23:24:21 -0700
New album 'The Classic' is made of black tin case, engraved with Shinwha logo. It also includes special 100-page photo book of Shinwha, which Korea's top photographers, including Cho Sun hee, participated in. Moreover, Shinwha kept fans excited as it ...
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