The younger granites form rugged hills of Jurassic age, and contain tinstone and columbite. |
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The procedures needed to separate the tinstone from the other minerals are demanding. |
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Cassiterite is also known as tinstone, and is an important tin ore. |
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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. |
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Here, Rick Spicer, left, and Clark tinstone of Pacific Coast Lighting, chat with Ireland. |
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Early tin ingots and tinstone from Western Europe and the Mediterranean, in Franklin et al. |
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