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"Cassiterite has recently become an illegally mined and traded mineral in the
Democratic Republic of the Congo. This is due to great increase in tin demand because new lead-free
solder materials have a larger proportion of tin. It is generally traded by some organizations as
coltan.Coltan and cassiterite are two totally different minerals. Cassiterite is currently (August 2007) being legally mined by artisanal miners in Katanga Province."
Agreed. The illegal mining/warring for cell phone materials belongs elsewhere. This is an article about the mineral - not about the use/misuse of tin or other elements and their ores. Take/Leave it elsewhere.
Vsmith02:00, 28 August 2007 (UTC)reply
Since when has Dartmoor been in Cornwall? Does the article refer to deposits on Dartmoor (which is in Devon), or on moorland in Cornwall (probably Bodmin Moor)?
Peridon (
talk)
19:52, 2 February 2012 (UTC)reply
Dumb Question
I understand that charcoal is black and diamonds are white, and (roughly) understand why: It's a crystallography/isomer/diffraction thing.
But I *think*
Tin dioxide and
cassiterite have the same crystallography, and yet one is white and the other black. Why is that?