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hornfels

NOUN
  1. a fine-grained metamorphic rock formed by the action of heat on clay rocks

How To Use hornfels In A Sentence

  • - A fragment (or xenolith) of well mineralized intrusive within barren granodiorite was observed in drill hole MX07-03; - Disseminated molybdenite has recently been observed in intrusive rocks at the 805 mine level, currently below the Z zone described previously; and, - Strong quartz stockwork with molybdenite in biotite hornfels has been observed adjacent to the Ethel zone (Drill Hole MX07-01). FinanzNachrichten.de: Aktuelle Nachrichten
  • The preliminary, widely spaced five hole drill program encountered anomalous gold, arsenic and base-metals in intervals tens-of-metres thick with silicification, pyritic sulphides, within variable skarn and hornfels alteration. The Earth Times Online Newspaper
  • They went single file, stopping once to clear a rockfall, pitching splintered chunks of shale and hornfels into the groan - ing trench to their right. Wizard and Glass
  • The slate, where thermally metamorphosed, has been turned into siliceous hornfels and mica schist.
  • (VTEM) surveys flown in 2008 showed that outcropping granitic plugs are marked by magnetic lows while hornfels altered zones underlie magnetic highs. The Earth Times Online Newspaper
  • -- TB High Grade Zone - 500 metre of anomalous hornfels zone with drill results including: Latest News - Yahoo!7 News
  • - A fragment (or xenolith) of well mineralized intrusive within barren granodiorite was observed in drill hole MX07-03; - Disseminated molybdenite has recently been observed in intrusive rocks at the 805 mine level, currently below the Z zone described previously; and, - Strong quartz stockwork with molybdenite in biotite hornfels has been observed adjacent to the Ethel zone (Drill Hole MX07-01). FinanzNachrichten.de: Aktuelle Nachrichten
  • The iron-rich skarn rocks, as well as other skarn types including epidote-silica skarns and sulphide-rich skarns, and hornfels rocks have been mapped as covering an area approximately 2,000 metres east-west by > ACN Newswire
  • As a result, contact metamorphic minerals grow in random interlocking patterns giving rise to hornfels, a tough rock with no direction along which it will split preferentially.
  • - Strong quartz stockwork with molybdenite in biotite hornfels has been observed adjacent to the Ethel zone (Drill Hole MX07-01). Undefined
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