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geological:material,
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volcanic:material,
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sedimentary:rock,
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basic:rock,
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volcanic:rock,
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crystalline:rock,
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volcanic:sediment,
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extrusive:rock,
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granular:rock,
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porous:rock,
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siliceous:rock,
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artificial:material,
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permeable:unit,
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soft:rock,
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natural:material,
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natural:stone,
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volcanic:precursor,
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igneous:rock,
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lightweight:aggregate,
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consolidated:material,
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lightweight:material,
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brittle:rock,
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soft:material,
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natural:sorbent,
Category Nuances for tuff:
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geological,
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sedimentary,
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siliceous,
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natural,
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volcanic,
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extrusive,
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basic,
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crystalline,
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granular,
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soft,
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brittle,
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igneous,
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consolidated,
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lightweight,
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porous,
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permeable,
-
artificial,
Simple Categories for tuff: