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optical observation of specimen

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Does rough uncut, rough quartz demonstrate the following: 1. dispersion (also called "fire" 2. Chromatic flares when photographed with digital camera. 3. Play of rainbow colors , needles radiating out. from light source. I have unknown specimen that does display the above, The optics of my eye see alot different than what the camera optics captures in a photo. Note: THe above was observed nunder 20x power (approx)

Also would you be able to see a color patch as depicted in attached photo

alt text

I would appreciate any feedback Respectfully,

asked Sep 10, 2012 by matt (140 points)

Also I put red laser light againt surface Specimen just lit up , did not pass light thru

1 Answer

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Yes, rough quartz has dispersion, though it is very weak. Not sure about chromatic flares though - not familiar enough on that subject. Play of rainbow colors is only occasionally exhibited on quartz with hematite overgrowths that have an iridescence. Not common though i have seen it on a few occasions. FYI your photo did not properly post.

answered Sep 10, 2012 by hershel (52,800 points)

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