DR. HANNEMAN'S MINERAL COLLECTION WILL BE AVAILABLE FOR SALE IN THE NEAR FUTURE
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 Post subject: My collection(*^__^*)
PostPosted: Fri Dec 03, 2010 10:47 pm 
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Ocean jasper
There is a flower on the stone.


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Ocean jasper.jpg
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 Post subject: Re: My collection(*^__^*)
PostPosted: Fri Dec 03, 2010 11:14 pm 
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That's great.


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 Post subject: Re: My collection(*^__^*)
PostPosted: Fri Dec 03, 2010 11:26 pm 
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cool raw material ! where did you get it?


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 Post subject: Re: My collection(*^__^*)
PostPosted: Sat Dec 04, 2010 6:10 am 
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Nice!

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 Post subject: Re: My collection(*^__^*)
PostPosted: Sat Dec 04, 2010 8:52 am 
From the pics, looks more like Poppy Jasper then Ocean Jasper. See Maialetto's August pic in the GO 2011 calendar.

Whatever, you have a nice pic of a scrumptious stone. Thanks for sharing.


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 Post subject: Re: My collection(*^__^*)
PostPosted: Sat Dec 04, 2010 10:56 am 
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Poppy jasper, ocean jasper, etc. are decorative terms that are somewhat subjective.

Neither term is mineralogically recognized. :)

Both are varieties of chalcedony, specifically, they are orbicular Jaspers formed by highly silicified rhyolite or tuff that has quartz and feldspar crystallized into radial aggregates of needle-like crystals forming orbicular (spherical) structures.

UPDATE: See ROM's explanation lower on the page for clarification of terminology!


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 Post subject: Re: My collection(*^__^*)
PostPosted: Sat Dec 04, 2010 12:08 pm 
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stairman wrote:
cool raw material ! where did you get it?

In local market in Guangzhou, China. I do this business because I lover stones. I want to make it a pendent with 925 silver. But they do not do that for me because it will cost a lot of tiem, but get no profit....


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 Post subject: Re: My collection(*^__^*)
PostPosted: Sat Dec 04, 2010 12:10 pm 
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Barbra Voltaire wrote:
Poppy jasper, ocean jasper, etc. are decorative terms that are somewhat subjective.


Neither term is mineralogically recognized. :)

Both are varieties of chalcedony, specifically, they are orbicular Jaspers formed by highly silicified rhyolite or tuff that has quartz and feldspar crystallized into radial aggregates of needle-like crystals forming orbicular (spherical) structures.

Tnak you very much for telling me so much about it. In China, most people call it ocean agate. I am confused for a long time.


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 Post subject: Re: My collection(*^__^*)
PostPosted: Sat Dec 04, 2010 4:16 pm 
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Barbra Voltaire wrote:
Poppy jasper is often used when the stone is warm orange tones.
Ocean jasper when the stone appears in cool tones.
Neither term is mineralogically recognized. :)

No they're not mineralogically recognized. But those names are very well recognized among dealers.

The name "poppy jasper" is most often given (in the U.S.) to fine orbicular jasper displaying red "poppy" patterns that was mined near Morgan Hill, CA, south of San Francisco. Orbicular jaspers with somewhat similar coloration are found at several other points along the California coast.

"Ocean Jasper" was given its name because it's literally mined in the ocean at low tide off the coast of Madagascar. It can display warm tones of orange and yellow though red is rare. Its appearance is pretty distinctive.

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 Post subject: Re: My collection(*^__^*)
PostPosted: Sun Dec 05, 2010 12:17 am 
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Thanks Rick for that clarification. I was not aware of that.

I personally don't often deal in jaspers so I appreciate the lesson.

So, Rick, what would you term the jasper originally pictured in the post? Since the origin is unclear, would you simply term it orbicular?


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 Post subject: Re: My collection(*^__^*)
PostPosted: Sun Dec 05, 2010 2:02 am 
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Sure it's orbicular, Barbra. The word is an adjective meaning a pattern in the form of an orb -- spherical or circular. There are other types of orbicular jasper too, like the fine porcelain jasper stones trade-named Imperial Jasper from Mexico and similar types like Bruneau (pictured next) and several others:
Attachment:
DCab 59a.JPG
DCab 59a.JPG [ 16.06 KiB | Viewed 1785 times ]


I'm 99% certain the images in this thread are Ocean Jasper. It's quite distinctive. But it occurs in bright colors as well, like the image below (which I cannot make behave and take its proper position in the post!)

I agree that the names for such materials can be very subjective and confusing. They are often used regionally but within the trade for such items there's pretty good agreement about what's being discussed -- at least in the U.S.

The stone at the bottom is a pretty good example of the original Morgan Hill orbicular Poppy Jasper displaying red Oriental Poppy forms:
Attachment:
Ocean Jasper.jpg
Ocean Jasper.jpg [ 23.58 KiB | Viewed 1785 times ]


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DCab 107.jpg
DCab 107.jpg [ 21.35 KiB | Viewed 1785 times ]

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 Post subject: Re: My collection(*^__^*)
PostPosted: Sun Dec 05, 2010 3:03 am 
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I agree with ROM. The original pic is ocean and the one waay down the bottom is a poppy. Nice ocean ROM. :D

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 Post subject: Re: My collection(*^__^*)
PostPosted: Sun Dec 05, 2010 9:36 am 
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That is a stunning piece! I've seen a lot of ocean jasper and yours is very unique.

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 Post subject: Re: My collection(*^__^*)
PostPosted: Tue Dec 07, 2010 3:09 am 
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8) s-w-e-e-t!! more jasper cabs!!

wow, ROM, your bruneau jasper looks like it has a blue sky!! 8)


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 Post subject: Re: My collection(*^__^*)
PostPosted: Tue Dec 07, 2010 11:50 am 
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gingerkid wrote:
8) s-w-e-e-t!! more jasper cabs!!

wow, ROM, your bruneau jasper looks like it has a blue sky!! 8)

It's just a trick of the light -- I need to re-shoot that image. It's definitely dark brown. Highly polished cabs are challenging to photograph. It's like taking a picture of a mirror without capturing your own or other reflections.

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