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Petroglyph88: Natrolite
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Petroglyph88: Goethite crystals in quartz
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Petroglyph88: Natrolite crystals, Mt. Upcot
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Petroglyph88: Heulandite and analcime crystals
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Petroglyph88: Hematite spheres on heulandite
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Petroglyph88: Heulandite
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Petroglyph88: Heulandite
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Petroglyph88: Natrolite crystals
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Petroglyph88: Natrolite crystals, Mt. Upcot
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Petroglyph88: Zeolites in habitat