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Bob's rocks
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GneissWare




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PostPosted: Jul 19, 2013 10:32    Post subject: Bob's rocks - Hercules Mine, Coahuila, Mexico  

Here are a few from this huge iron mine...


IMG_6107.jpg
 Description:
Calcite
Hercules Mine, Municipio de Camargo, Chihuahua, Mexico
191 x 87 x 65 mm

This cluster of Calcite crystals consists of both elongated scalenahedrons and butterfly twins (to 44 mm) with a reddish tinge from Hematite inclusions that deepens in color towards the centers of the Calcite crystals forming nice Hematite phantoms. The Calcites also display distinct chatoyancy. Although it presents damage around the margins where it was removed, it is one of the only surviving specimens from what was reportedly a large, several meters long cave completely covered by such Calcite. It was given to me by Francisco Aguilera who worked at the Hercules Mine and actually collected it. Casey Jones and I met Francisco through the mine office because he spoke some English.
 Viewed:  25151 Time(s)

IMG_6107.jpg



IMG_6113.jpg
 Description:
Magnetite
Hercules Mine, Municipio de Camargo, Chihuahua, Mexico
69 x 55 x 33 mm

Black, octahedral Magnetite crystals to 25 mm are intergrown and lightly accented by rusty-red Hematite. In excellent conditon, this specimen was self collected during the 1993 Grossular collecting trip Graham and I took. The outcrop lies just outside the mine, and was pointed out to us by Felix who was a mining engineer at the Hercules mine, following some exploratory blasting.
 Viewed:  25249 Time(s)

IMG_6113.jpg



IMG_6114.jpg
 Description:
Magnetite
Hercules Mine, Municipio de Camargo, Chihuahua, Mexico
67 x 62 x 40 mm

Shiny black, octahedral crystals of Magnetite to 12 mm are intergrown and accented by a cluster of small, clear Quartz crystals. In excellent conditon, this specimen was self collected during the 1993 Grossular collecting trip Graham and I took. The outcrop lies just outside the mine, and was pointed out to us by Felix who was a mining engineer at the Hercules mine, following some exploratory blasting.
 Viewed:  25364 Time(s)

IMG_6114.jpg


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GneissWare




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PostPosted: Sep 29, 2013 23:32    Post subject: Bob's rocks -- South Africa Japan-Law Amethyst  

Here is an unusual piece I picked up -- a large japan law twin covered with a second generation of Quartz (v. Amethyst)


RG1319.jpg
 Description:
Quartz ( var. Amethyst Japan Twin )

Farm Boekenhouthoek, Mkobola District, Mpumalanga Province, South Africa
106 x 76 x 59 mm

ex. Uli Bahmann collection
 Viewed:  24987 Time(s)

RG1319.jpg


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Michael Shaw
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PostPosted: Sep 30, 2013 10:27    Post subject: Re: Bob's rocks  

Good eye Bob. It would have been very easy to overlook this piece as just another "cactus quartz" typical of that area.
Michael
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GneissWare




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PostPosted: Oct 01, 2013 08:05    Post subject: Bob's rocks -- Fluorapatite from Wutong Mine China  

Everyone is familiar with the Rhodos from here, but few of the Apatite specimens are seen. Here is a specimen I picked up.


RG1304b.jpg
 Description:
Fluorapatite on Quartz with Rhodochrosite

Wutong Mine, Liubao, Cangwu Co., Wuzhou Prefecture, Guangxi Zhuang A.R., China
100 x 59 x 40 mm

Multiple purple Apatites with greenish cores, to 15 x 5 mm on matrix of small Quartz crystals, accented by a Rhodochrosite disc measuring 19 mm across.
 Viewed:  24812 Time(s)

RG1304b.jpg


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PostPosted: Nov 05, 2013 22:09    Post subject: Bob's rocks -- Fluorite on Stibnite  

Here is a bit of a rarity from China...


Tucson2012-80FluoriteStibniteQinglong85mm.jpg
 Description:
Stibnite with Fluorite
Qinglong Mine, Dachang Sb Ore Field, Qinglong Co., Qianxi'nan Autonomous Prefecture, Guizhou Province, China

86 x 73 x 68 mm

Most specimens from this locality are coated with pale Fluorite, but these Stibnite crystals are covered with strong lavender-purple Fluorite.
 Viewed:  24610 Time(s)

Tucson2012-80FluoriteStibniteQinglong85mm.jpg



Tucson2012-80FluoriteStibniteQinglong85mmB.jpg
 Description:
Stibnite with Fluorite
Qinglong Mine, Dachang Sb Ore Field, Qinglong Co., Qianxi'nan Autonomous Prefecture, Guizhou Province, China

86 x 73 x 68 mm

another view
 Viewed:  24588 Time(s)

Tucson2012-80FluoriteStibniteQinglong85mmB.jpg


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Don Lum




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PostPosted: Nov 06, 2013 12:41    Post subject: Re: Bob's rocks  

Bob, your Stibnite with Fluorite is a beautiful specimen and good size too. Congratulations.

Don

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Mike Wood




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PostPosted: Nov 06, 2013 18:51    Post subject: Re: Bob's rocks  

Wonderful specimen Bob, as usual! Thanks for sharing. Looks a rare combination

Regards, Mike
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PostPosted: Nov 06, 2013 21:00    Post subject: Bob's rocks - Inner Mongolia Manganocalcite  

Thanks for the nice comments...

Up next, a large, pristine specimen, from late in 2012.



RG1320.jpg
 Description:
Calcite ( var. Manganoan ) with Quartz
Huanggangliang Fe mine, Kèshíkèténg Qí, Chifeng Prefecture, Inner Mongolia A.R., China

92 x 71 x 52 mm

Bright light pink manganoan-Calcite to 55 x 40 x 7 mm with light-smoky Quartz scepters to 14 mm
 Viewed:  24432 Time(s)

RG1320.jpg


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PostPosted: Nov 06, 2013 21:04    Post subject: Bob's rocks - Xuebaoding combo  

I really like rocks from this locality...


RG1317.jpg
 Description:
Scheelite on Beryl (v. Aquamarine)
Mt. Xuebaoding, Pingwu County, Mianyang Prefecture, Sichuan Province, China

64 x 55 x 44 mm

Lustrous blue tabular and blocky crystals of Beryl to 45 x 38 mm host a sharp, pale orange Scheelite to 20 x 20 x 15 mm. These Aquamarines are much bluer than typical for this locality.
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RG1317.jpg


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Greg Lilly




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PostPosted: Nov 06, 2013 21:08    Post subject: Re: Bob's rocks  

Hi Bob,
Love the calcite with quartz sceptres, great piece,
Greg
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Pierre Joubert




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PostPosted: Nov 07, 2013 03:02    Post subject: Re: Bob's rocks  

Greg Lilly wrote:
Hi Bob,
Love the calcite with quartz sceptres, great piece,
Greg


I agree with Greg. It is an outstanding specimen. I also like the Stibnite with Fluorite and the Wulfenites.

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Michael Shaw
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PostPosted: Nov 07, 2013 10:39    Post subject: Re: Bob's rocks -- Fluorite on Stibnite  

GneissWare wrote:
Here is a bit of a rarity from China...


Beautiful piece Bob. Stibnite and fluorite is an association that I would least imagine.
Michael
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GneissWare




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PostPosted: Nov 07, 2013 18:12    Post subject: Re: Bob's rocks -- Fluorite on Stibnite  

crosstimber wrote:
GneissWare wrote:
Here is a bit of a rarity from China...


Beautiful piece Bob. Stibnite and fluorite is an association that I would least imagine.
Michael


They occur at several localities. There is a famous local in Thailand, and of course in Kyrgyzstan.

https://www.topminerals.info/index.php?level=picture&id=16955&searchterms=&searchauthor=GneissWare
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PostPosted: Dec 21, 2013 18:18    Post subject: Bob's rocks - Chinese Helvite  

A new Helvite from Huanggangliang in China...came out about 2 months ago.

Lustrous brownish three-dimensional stack of Helvite crystals perched on a matrix of green Quartz points. Several small Quartz points are perched on the Helvite. The cluster of Helvite is 57 mm tall by 63 mm wide. Displays from all side and is damage free. Really difficult to photograph, and the helvite is much richer colored in person.



IMG_6851.jpg
 Description:
Helvite on Quartz
Huanggangliang Fe mine, Kèshíkèténg Qí, Chifeng Prefecture, Inner Mongolia A.R., China
99 x 90 x 65 mm
 Viewed:  23437 Time(s)

IMG_6851.jpg



IMG_6854.jpg
 Description:
Helvite on Quartz
Huanggangliang Fe mine, Kèshíkèténg Qí, Chifeng Prefecture, Inner Mongolia A.R., China
99 x 90 x 65 mm
 Viewed:  23426 Time(s)

IMG_6854.jpg



IMG_6856.jpg
 Description:
Helvite on Quartz
Huanggangliang Fe mine, Kèshíkèténg Qí, Chifeng Prefecture, Inner Mongolia A.R., China
99 x 90 x 65 mm
 Viewed:  23450 Time(s)

IMG_6856.jpg


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Don Lum




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PostPosted: Dec 21, 2013 18:29    Post subject: Re: Bob's rocks  

Beautiful Helvite, Bob. The photographs are superb.

Merry Christmas !!!

Don

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PostPosted: Dec 21, 2013 19:45    Post subject: Re: Bob's rocks  

Thanks Don. Wishing you a Merry Christmas, as well.
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PostPosted: Dec 22, 2013 12:39    Post subject: Re: Bob's rocks  

After viewing the specimens shown here I get a sinking feeling I've wasted close to $10K on specimens I have bought. I simply love seeing the natural beauty! As a retired physical sciences teacher I have learned much in the past 2.5 years since I started collecting and still enjoy looking at my displays daily. I now post the "Mineral of the Week" on my Facebook page which seems to be enjoyed by many viewers.
Guess I didn't waste money after-all, because I enjoy them so much and the info. I provide allows me to continue teaching.
Yours are fantastic!! Id love to see them in person.
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PostPosted: Feb 21, 2014 21:16    Post subject: Bob's rocks - Xuebaoding combo  

Here is a Xuebaoding combo I picked up in Tucson. Quartz associations for some reason are very uncommon.


RG1326.jpg
 Description:
Scheelite and Quartz on Muscovite
Mt. Xuebaoding, Pingwu County, Mianyang Prefecture, Sichuan Province, China
174 x 98 x 51 mm overall
Five orange Scheelites to 30 mm are nestled in a matrix of Muscovite. Clear Quartz points, some doubly terminated, to 29 x 12 mm accent the specimen.
 Viewed:  22758 Time(s)

RG1326.jpg


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Michael Shaw
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PostPosted: Feb 21, 2014 21:23    Post subject: Re: Bob's rocks  

Wonderful piece Bob.
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PostPosted: Feb 21, 2014 22:05    Post subject: Re: Bob's rocks  

Beautiful combination specimen, Bob.

Congratulations.

Don

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