Mineral-veins sentence example

  • Such crystals occur either in cavities in mineral-veins and in granitic rocks, or as a lining in agate geodes.
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  • By the operation of meteoric agencies, iron pyrites readily pass into limonite often with retention of external form; and the masses of "gozzan" or "gossan" on the outcrop of certain mineral-veins consist of rusty iron ore formed in this way, and associated with cellular quartz.
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  • It is common in mineral-veins, usually associated with quartz, and is often known to miners as "mundic."
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