How To Use Hornfels In A Sentence
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- 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).
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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
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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
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The slate, where thermally metamorphosed, has been turned into siliceous hornfels and mica schist.
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(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
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-- TB High Grade Zone - 500 metre of anomalous hornfels zone with drill results including:
Latest News - Yahoo!7 News
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- 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).
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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
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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.
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- 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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The hornfels can be very friable, as are the sakura ishi, which makes it easy to find nice crystal sections but difficult to collect matrix specimens.
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For scheelite-dominated deposits, there is the formation of marbles and locally extensive tremolite, silicification, and the development of extensive skarn and hornfels zones.
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These are actually pseudomorphs of sericite (a fine-grained white mica) after cordierite and are found included in hornfels or slate as a product of contact metamorphism.
