DR. HANNEMAN'S MINERAL COLLECTION WILL BE AVAILABLE FOR SALE IN THE NEAR FUTURE
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PostPosted: Wed Nov 25, 2009 7:30 pm 
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8) very nice inclusion shots, ron!! those are excellent!! love the ocean jasper orb photographs, very nice!! ocean jasper is one of my faves!! and the blue fluorite crystal shots are nice, too!!


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PostPosted: Wed Nov 25, 2009 7:37 pm 
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WHOA!!! COOL NARNIES =D>

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PostPosted: Wed Nov 25, 2009 7:42 pm 
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mehoose wrote:
WHOA!!! COOL NARNIES =D>


moo haus, what's a narnie?? :wink:

ron, what are the "orbs" in ocean jasper, which sometimes appear "flower-like?"


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 Post subject: "flower" Ocean Jasper
PostPosted: Wed Nov 25, 2009 11:32 pm 
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The "flower" type of patterns are created when a spherical inclusion becomes the crystallization center for concentric crystal growth. The sphere grows to a certain point, and then becomes the nucleus for group of crystals.

Here is a sample of ocean jasper with the "flowers". Looking through the clear calcedony around the inclusions, you can just make out their spherical shape.

Image

Here is a reflected light close-up of a portion of the pattern. The next photo (after this one) shows a thin-section cut through this area, but is reversed on the microscope slide.

Image

Here is the thin section image. The center area looks similar to the round structures in the previous yellow-orange samples. It is apparently made up of small spheres or "blobs" of iron hydroxides. Crystals then begin to grow outward away from this spherical center. They look kind of like feathers in the thin section. There are several layers of these crystals around each center.

Image

In this particular sample the large crystals apparently ran out of material to grow, and then terminated. After some time a new solution filled in the void space between these end crystals and formed a small agate structure.

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PostPosted: Thu Nov 26, 2009 4:02 am 
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Hi Ron,
VERY NICE shots, congrats!!! :D
the Fluorite inclusions could be mistaken with Anatase at a first glance.
Did you completed the darkfield setup?
ciao
alberto

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PostPosted: Thu Nov 26, 2009 5:32 pm 
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8) thank you very much for you explanation with corresponding photographs for the orbs and flowers seen in some madagascan ocean jasper, ron!! ocean jasper fascinates me with its different patterns and colors!! jan


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PostPosted: Sat Nov 28, 2009 6:54 pm 
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How did I miss this thread???? :oops:
Beautiful work as always Ron.


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PostPosted: Wed Dec 02, 2009 3:52 pm 
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Greetings One & All

I too missed this excellent posting!!!

Excellent Job Ron!!!!

You gave me some interesting ideas and the software is reasonable too!

It is really great when everyone here freely shares Ideas, Concepts and Solutions from different angles.

Thanks Again Ron

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