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pro_duo
Joined: 20 May 2009
Posts: 28
Location: California
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 Posted: Dec 12, 2009 07:02 Post subject: Pro_duo's collections |
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hi,
this is my first time to show my collections in this section. I don't have any museum quality collections, but they do have their own signature.
here we go..
Phantom Ametrine from Zambia, Afriica
size about 1.7x1.8x2.5 cubic cm
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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1531
Location: Catalonia
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| Posted: Dec 12, 2009 10:12 Post subject: Re: pro_duo's collections |
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| pro_duo wrote: | | I don't have any museum quality collections, but they do have their own signature. |
Hi pro_duo!
Very few FMF members own a museum quality collection, if any. So feel welcome and free to post all your specimens photos here, with signature or without.
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Ed Huskinson
Joined: 15 Apr 2009
Posts: 318
Location: Kingman, Arizona
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| Posted: Dec 12, 2009 13:36 Post subject: Re: pro_duo's collections |
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Holy cow pro-duo!!!
What's wrong with your amethyst? It's like, the mineralizing solutions couldn't make up their minds and were fighting over whose formula was going to prevail, clear vs amethystine. This is a really nice crystal, with spectacular zoning. I'm sure that John White joins me in calling "Dibs!" on the specimen if ever you decide to part with it. An auspicious beginning, and we all look forward to more posts. Keep up the good work.
Ed in Kingman
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La respuesta está en las rocas!! Estudiadlas!!
Ed |
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pro_duo
Joined: 20 May 2009
Posts: 28
Location: California
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| Posted: Dec 12, 2009 19:58 Post subject: Re: pro_duo's collections |
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| Ed Huskinson wrote: |
What's wrong with your amethyst? |
That was the same question when I received that ametrine. The suppier said that was amethyst, but when I looked at it under a bright light, I could not believe there is brown color in the crystal.
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Hematite with rutile
from Tetikanana, Madagascar
size about 10x12x3 cubic mm
it has almost six, almost perfect terminals/sides of hexagon.
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Pete Richards
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Joined: 29 Dec 2008
Posts: 842
Location: Northeast Ohio
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| Posted: Dec 12, 2009 21:59 Post subject: Re: pro_duo's collections |
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| Quote: | Hematite with rutile
from Tetikanana, Madagascar
size about 10x12x3 cubic mm
it has almost six, almost perfect terminals/sides of hexagon. |
A lovely crystal. Since hematite actually has three-fold symmetry, not full six-fold symmetry, we should not expect a perfect hexagon, and every other side face may have a different tilt from its neighbor! There are two alternating sets of three equivalent side faces, not one set of six.
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Collecting and studying crystals with interesting habits, twinning, and epitaxy |
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parfaitelumiere
Joined: 02 Mar 2008
Posts: 153
Location: Auvergne
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| Posted: Dec 13, 2009 05:56 Post subject: Re: pro_duo's collections |
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| What a good hematite crystal!
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John S. White
Site Admin
Joined: 04 Sep 2006
Posts: 1298
Location: Stewartstown, Pennsylvania, USA
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| Posted: Dec 13, 2009 05:59 Post subject: Re: pro_duo's collections |
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I agree with Ed, I would be happy to have such a wonderfully zoned ametrine in my quartz collection.
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John S. White
aka Rondinaire |
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pro_duo
Joined: 20 May 2009
Posts: 28
Location: California
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| Posted: Dec 14, 2009 06:37 Post subject: Re: pro_duo's collections |
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| Pete Richards wrote: |
A lovely crystal. Since hematite actually has three-fold symmetry, not full six-fold symmetry, we should not expect a perfect hexagon, and every other side face may have a different tilt from its neighbor! There are two alternating sets of three equivalent side faces, not one set of six. |
I didn't know about that. That's why I said "almost" .Thanks for telling me that the detail information. Feel free to correct me. Haha
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Cacite
Unkown origin
size about 1.2x1.2x4.5 cubic cm
It really looks like a weapon from ancient age
For the origon, do anyones know this kind of calcite froms where?
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Peter Megaw
Site Admin
Joined: 13 Jan 2007
Posts: 973
Location: Tucson, Arizona
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| Posted: Dec 14, 2009 07:51 Post subject: Re: pro_duo's collections |
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Florida perhaps?
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Siempre Adelante! |
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Les Presmyk
Joined: 06 Dec 2007
Posts: 372
Location: Gilbert, AZ
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| Posted: Dec 14, 2009 09:54 Post subject: Re: pro_duo's collections |
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| Or the locality in China that has been producing similar calcites.
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parfaitelumiere
Joined: 02 Mar 2008
Posts: 153
Location: Auvergne
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| Posted: Dec 14, 2009 10:07 Post subject: Re: pro_duo's collections |
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| I have taken a look to find such a hematite from Madan, it seems to be really hard to obtain...
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pro_duo
Joined: 20 May 2009
Posts: 28
Location: California
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| Posted: Dec 14, 2009 19:36 Post subject: Re: pro_duo's collections |
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| Peter Megaw wrote: | | Florida perhaps? |
did Florida have any mine that was closed a long time around Brooksville, Florida?
I found out the supplier left a piece of sheet and it wrote "BrooksvilleFla".
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Selenite
from Canada
size about 3/4 x 3/4 x 3/4 cubic inch
I like selenite has a name called desert rose. but looking at this specimen, I don't have any "desert" feeling.
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Tracy
Joined: 15 Sep 2006
Posts: 551
Location: Toronto
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| Posted: Dec 14, 2009 20:21 Post subject: Re: pro_duo's collections |
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pro_duo - I dont think that's a desert rose. Do a Google search on "desert rose gypsum" and you'll see that they are tan/brown and more granular in appearance, less gemmy...also, in deference to John, I will mention that the correct name is gypsum, not selenite...
- Tracy
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"Wisdom begins in wonder" - Socrates |
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pro_duo
Joined: 20 May 2009
Posts: 28
Location: California
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| Posted: Dec 15, 2009 00:31 Post subject: Re: pro_duo's collections |
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Thank you, Tracy.
if you didn't tell me, I would think selenite and gypsum were the same thing.they are same chemical formula, but not the same shape,right?
I didn't study a lot about selenite, even gypsum. why I called it selenite is because I follow the supplier/seller said what it was.
again, feel free to correct me. I appreciate you guys to do that
Thanks a lot!
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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| Posted: Dec 15, 2009 00:54 Post subject: Re: pro_duo's collections |
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Selenite is the clear variety of Gypsum.
Its sort of like Beryl (which is the proper mineral name) but has named varieties (based on chemistry and color), such as Aquamarine (blue) and Emerald (green).
You may want to look on www.mindat.org for help with localities. Your Florida locality is listed (sort of). For many localities there are photos of some of what is found there.
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