Rocks - 001
Terms
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- sulfur
- Found in Louisiana and Texas
- diamond
- Weighed in units called carats
- diamond
- Usually pale yellow or colorless
- sulfur
- Found near active or extinct volcanoes and in sedimentary beds deep underground
- platinum
- Firswt discovered in Columbia in South America
- sulfur
- Is yellow with conchoidal fracture
- sulfur
- Obtained by the Frasch process
- sulfur
- Burns with a blue flame
- copper
- Used by American Indians
- gold
- Mined extinsively from placer deposits
- diamond
- Sticks to grease during separation from ore
- quartz
- Has the chemical name silicon dioxide
- gold
- Ore almost always mixed with silver
- diamond
- Has perfect cleavage
- galena
- Composed of metal and sulfur
- gold
- Mined with dredges
- diamond
- Mined from the premier in South Africa
- platinum
- Has metallic luster
- gold
- Somtimes retrieved by panning
- diamond
- Has a greasy luster when uncut