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Topic: Cassiterite


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Tin

In the News (Fri 19 Apr 19)

  
  Cassiterite: Cassiterite mineral information and data.
Oriented overgrowths of cassiterite on nordenskioldine; oriented growths of quartz on cassiterite.
Cecchini A., Franzini M., Troysi M.(1990): La microdurezza della cassiterite.
Maldener, J., Rauch, F., Gavranic, M., and Beran, A. (2001) OH absorption coefficients of rutile and cassiterite deduced from nuclear reaction analysis and FTIR spectroscopy.
www.mindat.org /min-917.html   (570 words)

  
  Cassiterite Uses,Cassiterite Mineral,Cassiterite Information
Cassiterite is a mineral that has ornately faceted specimens with high luster.
Cassiterite has been an important ore of tin for eons and is still the greatest source of tin today.
However, cassiterite does not form this type of twin as often as its mineral cousin, rutile.
www.mineralszone.com /minerals/cassiterite.html   (177 words)

  
  Spartanburg SC | GoUpstate.com | Spartanburg Herald-Journal   (Site not responding. Last check: )
Most sources of cassiterite today are found in alluvial or placer deposits containing the resistant weathered grains.
Cassiterite is a widespread minor constituent of igneous rocks.
Cassiterite is also used as a gemstone and collector specimens when quality crystals can be found.
www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=cassiterite   (313 words)

  
 cassiterite.htm   (Site not responding. Last check: )
Description: Cassiterite is a dark brown to fl minerals found in granite pegmatites and high temperature hydrothermal deposits.
Cassiterite is found as very rare overgrowths on ilmenite in pegmatites at the Wimmer Pit #3 (NW sec.
WOOD COUNTY: Cassiterite is found as rare small euhedral crystals on chlorite in quartz veins cutting granite in the John Cepress Quarry (sec.
www.uwrf.edu /%7Ewc01/cassiterite.htm   (199 words)

  
 Bronze Age   (Site not responding. Last check: )
Similar to gold, cassiterite is usually found entrapped in gangue mineral if it is in the original lode containing the ore. A lode occurs like the cheese in a sandwich, where the cheese is the orestuff and the bread on either side the surrounding country rock.
A much used assay for cassiterite developed in western England's metalliferous region: a powdered sample of orestuff is swirled with water on the blade of a shovel and then given a series of upward flicking motions.
The size of the cassiterite head indicates the richness of the ore. This technique, known as "vanning," was still in use at a major tin mine until 1985.
www.hindunet.org /saraswati/bronzeage1.htm   (2455 words)

  
 Chemical aspects of cassiterite: Yellowknife pegmatite field
Cassiterite occurs primarily as massive anhedral grains, rarely showing crystal forms, or as veinlets in quartz + muscovite + plagioclase assemblages.
Cassiterite from the Yellowknife pegmatite field frequently contains elevated concentrations of these elements, which are incorporated into the cassiterite structure by substituting for Sn.
Tantalum is more likely to occur in cassiterite than Nb, which may be a reflection of the extreme fractionation achieved by the pegmatite at the time of cassiterite crystallization.
www.pegmatology.com /mwisedoc1.htm   (428 words)

  
 PIRSA Minerals - Mineral Resource Potential - Tin   (Site not responding. Last check: )
The principal ore of tin is cassiterite (SnO
The cassiterite and associated gold, monazite, molybdenite and base-metal sulphides are considered to be derived from a shallow Hiltaba Suite batholith.
Cassiterite with minor chalcopyrite, sphalerite, scheelite, silver and gold is contained within a siliceous, elongated east–west zone of highly deformed Mesoproterozoic acid volcanics at the northern end of the Mount Babbage Inlier.
www.pir.sa.gov.au /pages/minerals/commodity/tin.htm   (647 words)

  
 Cassiterite, rock, crystal, mineral, gem stone, birth stones - mineralgallery
The minerals commonly mistaken for cassiterite rutile and sphalerite.
In reducing blowpipe flame cassiterite can also be reduced to tin on charcoal, preferably with sodium carbonate.
Cassiterite is practiclly the only ore-mineral of tin.
www.mineralgallery.co.za /cassiterite.htm   (216 words)

  
 IHE Delft - Dicea   (Site not responding. Last check: )
The construction of a new port for the export of cassiterite (tin-ore) from the tin-mines along the Kali Migraine is another option (currently the cassiterite is exported through the small commercial harbour of Portharbor).
It is expected that the cassiterite output can be raised to 2 million tons per year, for which the existing port and its handling facilities at Portharbor will be too limited.
Cassiterite will be transported to the port by barges, for which the Kali Migraine needs to be regulated.
www.ihe.nl /we/dicea/polanaly/pes02/dvtoptio.htm   (804 words)

  
 Analysis: Great Lakes, Under-mining peace: Tin - the explosive trade in Cassiterite in Eastern DRC
Smuggling across the border into Rwanda means that large quantities of cassiterite and coltan are leaving the DRC unrecorded and untaxed, presenting a loss to the Congolese economy.
Cassiterite from conflict areas in eastern DRC is being purchased by foreign companies and ending up on the international market.
Impose sanctions on cassiterite and coltan imports from Rwanda until Rwanda can either demonstrate that it is the country of origin, or that it has paid the appropriate taxes to the producer country.
www.reliefweb.int /rw/RWB.NSF/db900SID/RMOI-6DU8TT?OpenDocument   (1796 words)

  
 Texas Campaign for the Environment: News Story   (Site not responding. Last check: )
Cassiterite, or tin oxide, is the most important source of the metallic element tin, and the DRC is home to fully one-third of the world's reserves.
To reach one of the many cassiterite mines in the virtually roadless northeast, 1,000 miles from the national capital Kinshasa, Miller's team followed a 40-mile footpath that, he reported, was as "busy as a motorway.
The tin in the 110 pounds of cassiterite a hauler in Congo carries on his shoulders for 40 miles would make enough tiny drops of tin solder to manufacture tens of thousands of cell phones.
www.texasenvironment.org /news_story.cfm?IID=288   (2588 words)

  
 MinVision - Cassiterite - China   (Site not responding. Last check: )
Cassiterite is the most common of the collectible minerals found at Mount Xuebaoding in Sichuan Province.
Another Chinese cassiterite locality of note is the Amo Mine, Ximeng County, Simao Prefecture in Yunnan Province.
The Yaogangxian mine is also producing fine specimens of cassiterite, though the species tends to play second fiddle to some of the more important ones of that locality.
www.minvision.com /article-64.html   (225 words)

  
 pg 10: Description of the El Paso Quadrangle, Texas (1909) Publication 2514134
Cassiterite occurs in the vein quartz but is more abundant immediately contiguous to it.
The cassiterite is present in crystals less than a tenth of an inch in size, both twinned and in simple tetragonal forms, and it also occurs massive.
The work reveals irregular streaks of quartz and cassiterite, varying up to 2 inches in thickness, in veins parallel to joints transverse to the trend of the range and cutting much-decomposed and broken granite.
www.lib.utexas.edu /books/landscapes/publications/txu-oclc-2514134/txu-oclc-2514134-10-print.html   (2001 words)

  
 Alan Guisewite's Mineral Collection Images: Miscellaneous Systematic Oxides Page
A shiny twin cassiterite crystal from LinĂ³polis, Divino das Laranjeiras, Minas Gerais, Brazil.
A miniature of lustrous cassiterite crystals on a matrix of zinnwaldite mica from Mount Xuebao, near Ping Wu, Sichuan Province, China.
A gorgeous bright intergrown miniature cluster of cassiterites from Ximeng County, Yunnan, China.
www-2.cs.cmu.edu /~adg/adg-psoimages.html   (6356 words)

  
 MSF Around the World
The lucrative cassiterite trade is now in the hands of forces of the former rebel movement RCD-Goma, who control an area almost the size of neighbouring Rwanda.
The demand for cassiterite is rising in the developed world: a global shortage of tin saw prices reach $9,600 a tonne in May this year, up from $6,500 in January.
Life is dangerous and hard for those who join the cassiterite trade, yet for those who choose not to work in the mines, the situation is worse.
www.msf.org /msfinternational/invoke.cfm?objectid=FB7AD8DD-A518-4F3D-ACC9DD7D6FD0A164&component=toolkit.article&method=full_html   (2270 words)

  
 Cochise College   (Site not responding. Last check: )
Cassiterite, tin oxide, is the primary ore of tin.
The specimens shown below are known as "wood tin" because of their brown, wood-like color and texture.
In scientific terms these rounded nodules of cassiterite are described as reniform and botryoidal.
skywalker.cochise.edu /wellerr/mineral/cassiterite/wood-tin2.htm   (70 words)

  
 SME--VIRTUAL ATLAS OF OPAQUE AND ORE MINERALS
Euhedral cassiterite (medium grey, bottom right) with small inclusions of wolframite (higher reflectance, centre of cassiterite) is replaced by phyllosilicates (white mica) (bottom centre) and quartz.
Euhedral cassiterite (grey, bottom centre) is twinned, shown by the differences in bireflectance (light and dark grey).
Coarse-grained cassiterite (light grey, left) is intergrown with radiating laths of molybdenite which show bireflectance and reflection pleochroism (brown-grey to grey, top right).
www.smenet.org /opaque-ore/plate15.htm   (390 words)

  
 After the rocks bearing cassiterite has been mined from the seam under ground and brought to grass
Rocks bearing cassiterite are mined from the vein under ground are sent to grass (surface) where it is then processed in the mill to free the cassiterite from the rock before going on to the smelter.The amount of cassiteriet or tin oxide found in Cornish mines is usually between 1 and 3 %
The sand like particles are mixed with water and with the aid of a bucket pump the cassiterite and sand mix is moved on to the next stage in its separation.
One of the most impressive operations in the separation of the cassiterite from the sand can be seen when the slime passes over the shaking table.The casseterite being heavier than the waste sand flows in one direction while the waste flows in the other direction.
king.edward.mine.mysite.wanadoo-members.co.uk /processing.htm   (395 words)

  
 Cassiterite Mineral Data
Comments: Very brilliant fl crystals of cassiterite on white mica.
Light gray with white to brownish internal reflections.
IV/D.02 - Rutile group, Rutile - Cassiterite - Platnerite series
webmineral.com /data/Cassiterite.shtml   (245 words)

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