greywacke (0 synonym found)

We don't have any synonyms for greywacke yet.

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graywacke  ·  greyback  ·  greyware  ·  grauwacke  ·  greyface

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Definition of greywacke:

(n) : (geology) A hard dark sandstone with poorly sorted angular grains of quartz, feldspar, and small rock fragments in a compact, clay-fine matrix.
Definition of greywacke:

(n) : (geology) A hard dark sandstone with poorly sorted angular grains of quartz, feldspar, and small rock fragments in a compact, clay-fine matrix.
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