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Hourglass Selenite
  
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Alan




Joined: 02 Mar 2014
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Location: Drummond, OK

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PostPosted: Apr 12, 2014 19:05    Post subject: Hourglass Selenite  

As you can see I have quite a bit. Looking to expand my collection so I am open to anything really. Just hit me up on here. The selenite crystal blades range in size from 1/2 an inch all the way to 7 plus inches and have iron inclusions forming an hourglass shape. Can do trades of singles to hundreds of crystals. Some clusters also. No cash offers only trades.


selenite2.jpg
 Description:
Selenite with iron inclusions
Alfalfa County Oklahoma
1/2 inch to 7 plus inches
 Viewed:  10313 Time(s)

selenite2.jpg



selenite1.jpg
 Description:
Selenite with iron inclusions
Alfalfa county Oklahoma
1/2 inch to 7 plus inches
 Viewed:  10297 Time(s)

selenite1.jpg



sel3.jpg
 Description:
Selenite with iron inclusions
Alfalfa county Oklahoma
1/2 inch to 7 plus inches
 Viewed:  10330 Time(s)

sel3.jpg



sel4.jpg
 Description:
Selenite with iron inclusions
Alfalfa county Oklahoma
1/2 inch to 7 plus inches
 Viewed:  10340 Time(s)

sel4.jpg


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Gail




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PostPosted: Apr 12, 2014 19:34    Post subject: Re: Hourglass Selenite  

interesting.
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Carles Curto
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PostPosted: Apr 14, 2014 00:31    Post subject: Re: Hourglass Selenite  

Iron inclusions? I believe they are sand inclusions.
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Mark Ost




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PostPosted: Apr 14, 2014 07:03    Post subject: Re: Hourglass Selenite  

Hi Carles

I don't know anything about sand inclusions in the gypsums but wonder why sand would arrange itself in the lattice in a repeatable pattern? Some gypsums display the figure 8 hourglass pattern under fluorescent light which would lead me to believe it would be a chemical inclusion. Anyone have information on this?
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crosstimber
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PostPosted: Apr 14, 2014 10:15    Post subject: Re: Hourglass Selenite  

Carles Curto wrote:
Iron inclusions? I believe they are sand inclusions.

Carles is correct. The inclusions in these gypsum crystals are sand particles. The color comes from iron oxide which imparts a reddish-brown color to many of our central Oklahoma soils.
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Riccardo Modanesi




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PostPosted: Apr 14, 2014 12:07    Post subject: Re: Hourglass Selenite  

Hi to everybody!
According to the pictures, it seems the inclusions are sand particles, as well as Michael and Carles say. However I have a gypsum crystal with native copper inclusions, coming from the US (I don't remember the proper locality, sorry!).
Greetings from Italy by Riccardo.

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Hi! I'm a collector of minerals since 1973 and a gemmologist. On Summer I always visit mines and quarries all over Europe looking for minerals! Ok, there is time to tell you much much more! Greetings from Italy by Riccardo.
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Alan




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PostPosted: Apr 15, 2014 11:05    Post subject: Re: Hourglass Selenite  

Oh well, I got schooled a little, but if no one trades I am going to build a castle with my extras. I live near the location and have too much fun digging them but get too many.
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