Mineral GuideGems
How the Earth was Formed
Marbles
Mineral Gallery
Mining of Metals
Conservation of Iron Ore
Minerals Containing Carbon
Process of Obtaining Coal
Sources of Coal
Anthracite Coal picture<
Bituminous Coal picture
Graphite Carbon picture
Uses of Coal
Minor Gems
Ores
Petroleum
Precious Stones
Quartz and the Silicates
Useful websites
Anthracite Coal picture
