cosmetal
starting to spend too much on rocks
Member since September 2018
Posts: 115
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Post by cosmetal on Apr 15, 2019 11:20:16 GMT -5
All Are these inclusions or dendrites within this tumbled amethyst point? Thanks! James
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Post by greig on Apr 15, 2019 11:28:05 GMT -5
I love looking at Dendritic rocks, but could not open these pics. Others might have the same issue.
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Post by Rockindad on Apr 15, 2019 11:40:09 GMT -5
Hmmm cannot see them either.
Al
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cosmetal
starting to spend too much on rocks
Member since September 2018
Posts: 115
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Post by cosmetal on Apr 15, 2019 11:57:51 GMT -5
"Gurgle . . ." I opened a Cloudinary account and have them stored there. I copied the url addresses of each photo and inserted that in the Insert Image URL within my post. The images showed up on my preview post and I can still see them there??? I'll try again later. Thanks! James
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cosmetal
starting to spend too much on rocks
Member since September 2018
Posts: 115
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Post by cosmetal on Apr 15, 2019 13:35:02 GMT -5
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mossyrockhound
fully equipped rock polisher
Member since January 2011
Posts: 1,278
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Post by mossyrockhound on Apr 15, 2019 13:48:26 GMT -5
Not dendrites. Looks like rutile to me. Pretty cool looking - good photos.
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jimaz
spending too much on rocks
Member since July 2018
Posts: 461
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Post by jimaz on Apr 15, 2019 14:12:18 GMT -5
Really good photos.
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Post by Rockindad on Apr 15, 2019 14:31:09 GMT -5
See them now, great photos. I agree with mossyrockhound on the rutile. Al
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Post by rockjunquie on Apr 15, 2019 14:48:01 GMT -5
Rutile or just sagenite like deer hair. Or, are they the same?
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gemfeller
Cave Dweller
Member since June 2011
Posts: 3,770
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Post by gemfeller on Apr 15, 2019 15:19:17 GMT -5
I think they're probably goethite inclusions. They're quite common in quartz, especially in amethyst. The material promoted as "cacoxenite in amethyst" contains goethite, not cacoxenite.
Putting on my professor's hat, the word sagenite is derived from the Latin word "sagena," which translates as "a large net." So any transparent/translucent material with needle-like inclusions whether rutile, goethite or any other entrapped mineral of that type is classified as sagenite.
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Apr 15, 2019 15:26:52 GMT -5
Yeah, based on the golden color of some of the sprays, I'd agree that rutile is likely.
However, there are other needle-like inclusions found in various rocks that can look similar to rutile (limonite, brookite, jamesonite, goethite, etc.) but form under different conditions and are rarer. Some people mistakenly call anything with needle-like inclusions "rutile" (not really accurate because rutile is a distinct mineral). Sagenite, on the other hand, is not a mineral name (it can refer to rutile or anything with needle-like crystal inclusions).
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NevadaBill
fully equipped rock polisher
Member since January 2019
Posts: 1,332
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Post by NevadaBill on Apr 15, 2019 17:10:01 GMT -5
I was going to say that they look like my fly fishing lures ... But nah. The dates are off.
On a side note, that is some really cool material. I would sure like to find some. The clarity is pretty amazing.
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Post by Lapidaryrough / Jack Cole on Apr 15, 2019 17:20:50 GMT -5
Zeolites
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Post by Pat on Apr 15, 2019 17:27:22 GMT -5
Cacoxenite is my favorite stone. 👍🏻
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cosmetal
starting to spend too much on rocks
Member since September 2018
Posts: 115
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Post by cosmetal on Apr 15, 2019 18:21:56 GMT -5
I was going to say that they look like my fly fishing lures ... But nah. The dates are off. On a side note, that is some really cool material. I would sure like to find some. The clarity is pretty amazing. NevadaBillI bought the small amethyst points from Shawn at the Rock Shed James
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