"WardsSci000478"

An introductory rock set contains six samples from each of the three major rock types.

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Light gray, earthy.

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Gray-to-brown basaltic, with over 50% vesicles.

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Unpolished metamorphic rock with silky lusture, red-brown colour, and clear parallel intergrown quartz crystals.

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Glassy; most specimens float in water.

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Represents a Wide Range of Depositional Environments and Rock Textures

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Grayish black trap rock.

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Silvery, paragranite and muscovite-rich with medium garnet crystals.

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Banded volcanic glass.

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Light gray, fine small clasts.

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