Mineral Guide
Gems
How the Earth was Formed
Marbles
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Agate gem stone
Amethyst gem stone
Crocidolite gem stone
Hornblende gem stone
Malachite gem stone
Malachite picture<
Quartz gem stone
Serpentine gem stone
Sulphur gem stone
Tourmaline gem stone
Mining of Metals
Minor Gems
Ores
Petroleum
Precious Stones
Quartz and the Silicates
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Mineral Gallery
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Malachite gem stone
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Malachite picture
Malachite picture
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