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Post by woodman on Feb 13, 2015 16:11:28 GMT -5
 Another shot of quartz from Hampton Butte. I need to take the pessure washer to it!!  |
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Post by 150FromFundy on Feb 13, 2015 17:07:07 GMT -5
Really neat chunk of rock. Hampton Butte is probably best known for its blue/green petrified wood and agates, but you have something really different there.
Hampton Butte is also listed to have apophyllite and stilbite according to mindat. The golden-yellow in the second photo looks like stilbite and what you think is quartz, may be apophyllite, or white stilbite. A hardness test should remove any doubt as the zeolites are soft and quartz is hard.
The blue green looks like a copper carbonate or sulphate and the tiny red/brown crystals look like copper/cuprite if the blue/green is in fact a secondary (weathered) copper mineral.
Post a few close up photos when you get that piece cleaned up.
Darryl.
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Post by woodman on Feb 13, 2015 17:16:28 GMT -5
Really neat chunk of rock. Hampton Butte is probably best known for its blue/green petrified wood and agates, but you have something really different there. Hampton Butte is also listed to have apophyllite and stilbite according to mindat. The golden-yellow in the second photo looks like stilbite and what you think is quartz, may be apophyllite, or white stilbite. A hardness test should remove any doubt as the zeolites are soft and quartz is hard. The blue green looks like a copper carbonate or sulphate and the tiny red/brown crystals look like copper/cuprite if the blue/green is in fact a secondary (weathered) copper mineral. Post a few close up photos when you get that piece cleaned up. Darryl. Is there some simple hardness tests that I can do? Would true piece of Quartz scratch zeolites? I know nothing of minerals, but am willing to learn! |
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Post by broseph82 on Feb 13, 2015 20:03:17 GMT -5
woodman Old copper penny Knife Quartz point Google "MOHs hardness test"
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Fossilman
Cave Dweller 
Member since January 2009
Posts: 20,723 
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Post by Fossilman on Feb 13, 2015 20:26:43 GMT -5
Liking it.......
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Post by woodman on Feb 13, 2015 23:13:00 GMT -5
Here are couple of closeup shots. I did scratch it with a dental pick so it is not too hard at all.   
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