Rocks and Minerals Section
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Natrolite
Natrolite

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Natrolite  radial needles on Analcite
Natrolite radial needles on Analcite

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Neptunite 2
Neptunite 2

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Neptunite  black silicate
Neptunite black silicate

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Neptunite  prisms and pinacoids with Natrolite
Neptunite prisms and pinacoids with Natrolite

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Niciline  Nickel arsenide unit
Niciline Nickel arsenide unit

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