hornblendite
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thumb|300px|Hornblendite from Poland
Hornblendite is a plutonic rock consisting mainly of the amphibole hornblende. Hornblende-rich ultramafic rocks are rare and when hornblende is the dominant mineral phase they are classified as hornblendites with qualifiers such as garnet hornblendite identifying a second abundant contained mineral.
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porphyry
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quartz monzonite
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tachylite
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International Standard Book Number
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coal
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granite
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marble
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limestone
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igneous rock
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flint
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basalt
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sedimentary rock
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sandstone
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chalk
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metamorphic rock
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obsidian
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lapis lazuli
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gneiss
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anthracite
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garnet group
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