‘The younger granites form rugged hills of Jurassic age, and contain tinstone and columbite.’
‘The procedures needed to separate the tinstone from the other minerals are demanding.’
‘Furthermore, the addition of the tinstone reduced the temperature required to melt the metal and, once melted, the bronze was more fluid and easier to cast.’
‘Cassiterite is also known as tinstone, and is an important tin ore.’
‘The principal ore of tin is the mineral cassiterite (or tinstone), SnO2, found abundantly on Phuket Island.’
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