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SOME POINTERS:
Photos typically include their locations, so you can use locations as keywords too. You get more hits with shorter words, and fewer hits as you become increasingly specific with increasing numbers of keywords. It’s best to use singular rather than plural (eg “volcano” instead of “volcanoes”).
As some words are included in others (“salt” within “basalt,” for example) you might want to be more specific to avoid getting a bunch of irrelevant photos.
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Dike in caldera wall, Crater Lake, OR (square)
Vertical Dike intruding wall of Crater Lake caldera OR (2K7CRLA-46)
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Rhyolite pumice and basaltic cinder
Close-up view of Rhyolite pumice (left) and basaltic cinder (right)(201217-3)
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Slickenlines on serpentinite
Slickenlines on serpentine minerals, lizardite and chrysotile (201216-5)
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Calcite and rhombohedral cleavage
Calcite crystals and rhombohedral cleavage. Photo is about 10cm across the bottom. (Min-25.2Min-58)
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Staurolite, showing cruciform twins
Staurolite, showing cruciform twinning (201210-73)
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Muscovite, biotite, chlorite (Pan)
Muscovite, biotite, chlorite –phylosilicate (sheet) silicate minerals, showing strong platy cleavage (201210-63)
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Magnetite
Magnetite, a highly magnetic iron oxide, shown stuck to a magnet (Fe304) (201210-48)
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Hornblende amphibole crystals
crystals of hornblende, an amphibole. The sample on the right side illustrates the 60° and 120° cleavage angles (201210-43)
Download ImageHematite : Non-metallic and metallic
Non-metallic and metallic (specular) hematite, iron oxide (201210-42)
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Kyanite crystals
Kyanite crystals, showing their typical bladed habit (201210-36) aluminosilicate
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