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Description
Clinohedrite is found at Franklin, but not Sterling Hill. It is a
beautiful fluorescent mineral, and glows bright orange under short-wave
ultraviolet light.
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Daylight view |
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Clinohedrite and hardystonite, fluorescing orange, and blue-violet, respectively, under short-wave UV.
Franklin, NJ. Width 12 cm.
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Clinohedrite occurs as thin coatings and small
crystals in fractures and vugs. It can form through the alteration of hardystonite (see
Dunn 1995), and
very frequently is found as nearly invisible coatings on parting surfaces or cleavage
planes of hardystonite (see images above). A short-wave ultra-violet light will instantly
demonstrate such samples.
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Daylight view |
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Clinohedrite,
hardystonite and willemite, fluorescing orange, blue-violet and green, respectively, under
short-wave UV. Franklin, NJ. Width 12 cm.
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The variable coverage of clinohedrite on
underlying hardystonite, as well as associated green-fluorescing willemite, makes for
spectacular specimens. Those shown on this page are all of this 'thin coating' type of
occurrence.
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Daylight view |
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Clinohedrite,
hardystonite and calcite, fluorescing orange, blue-violet and reddish-orange,
respectively, under short-wave UV. Franklin, NJ. Width 11 cm.
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Daylight view |
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Clinohedrite,
hardystonite and calcite, fluorescing orange, blue-violet and reddish-orange,
respectively, under short-wave UV. Detail of sample above. Franklin, NJ. Width 2 cm.
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Be sure to visit the photo
page taken under shortwave ultraviolet light.
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