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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2066
Location: Oklahoma
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 Posted: Sep 23, 2013 16:53 Post subject: Re: Collection of Michael Shaw |
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Thank you all for the input. Clearly these "pencil habit" schorls have been around much longer than I had thought. I had never seen them before, so I assumed they were something new. As to the exact locality, the specimens belonging to Carles and John both mentioned Laila Peak, so these are no doubt from the same general vicinity, perhaps from the same prospect.
Michael
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2066
Location: Oklahoma
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| Posted: Sep 25, 2013 09:28 Post subject: Re: Collection of Michael Shaw |
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Continuing with minerals from Pakistan.
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Elbaite-Schorl series
Doko, Basha Valley, Skardu District, Gilgit-Baltistan, Pakistan
3.0 x 3.6 cm.
Dark green elbaite crystals with modified pinacoid terminations associated with colorless bladed albite and books of pale yellow muscovite. |
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28359 Time(s) |
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| Description: |
Microcline
Raikot, Chilas Diamer District, Gilgit-Baltistan, Pakistan
3.6 x 8.0 cm.
Porcelain white Baveno-twinned microcline crystal with numerous smaller crystals along one prism face. |
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28349 Time(s) |
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Ferberite
Shigar Valley, Skardu District, Gilgit-Baltistan, Pakistan
3.5 x 7.1 cm.
Semi-lustrous black ferberite crystals to 2.5 cm forming am intergrown cluster with quartz. |
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28347 Time(s) |
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| Description: |
Anatase
Ras Koh Mountains, Kharan District, Balochistan, Pakistan
3.5 x 4.0 cm.
Sharp anatase crystals on a matrix of albite and quartz. |
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28373 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2066
Location: Oklahoma
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| Posted: Sep 28, 2013 07:32 Post subject: Re: Collection of Michael Shaw |
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Continuing with minerals from Pakistan.
| Description: |
Axinite
Khapalu, Ghanche District, Gilgit-Baltistan, Pakistan
7.1 x 8.8 cm.
A triangular plate of feldspar hosting sharp gemmy brown axinite crystals with small crystals of adularia. |
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28266 Time(s) |
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| Description: |
Zircon
Bulbin, Astor District, Gilgit-Baltistan, Pakistan
3.0 x 4.0 cm
Dark brown prismatic zircon exhibiting reddish highlights in strong transmitted light. |
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28336 Time(s) |
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| Description: |
Fluorite
Chumar Bakhoor, Hunza Valley, Gilgit-Baltistan, Pakistan
3.0 x 3.5 and 3.1 x 3.7 cm.
Transparent octahedral fluorite crystals with a pale green cores and pale pink edges. |
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28242 Time(s) |
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| Description: |
Quartz
Tole, South Waziristan, FATA, Pakistan
5.1 x 7.0 cm
Glassy, transparent, tabular quartz crystals in parallel growth with a prominent milky faden line visible roughly perpendicular to the c-axis. |
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28277 Time(s) |
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Tobi
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Joined: 07 Apr 2009
Posts: 4100
Location: Germany
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Roger Warin
Joined: 23 Jan 2013
Posts: 1175
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| Posted: Sep 28, 2013 10:55 Post subject: Re: Collection of Michael Shaw |
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Hi Michael,
Always pleasant to contemplate. Congratulations.
How can we say that tourmaline "Elbaite-jpg 654" is an elbaite? It seems to contain iron.
Roger.
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2066
Location: Oklahoma
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| Posted: Sep 28, 2013 11:39 Post subject: Re: Collection of Michael Shaw |
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| Roger Warin wrote: | Hi Michael,
Always pleasant to contemplate. Congratulations.
How can we say that tourmaline "Elbaite-jpg 654" is an elbaite? It seems to contain iron.
Roger. |
Thanks Tobi.
Roger,
There may well be some Fe in this piece. Just doing some more reading, and according to Mindat, there seems to be an elbaite-schorl series (Bosi, F., Andreozzi, G. B., Federico, M., Graziani, G. & Lucchesi, S. (2005): Crystal chemistry of the elbaite-schorl series. Am. Mineral. 90, 1784-1792.). I don't have a copy of this paper available, but perhaps these dark crystals are intermediate in the series. I wish I could take a good photo of this piece with the crystals backlit. They are definitely green, but too dark to see when lit from the front.
Michael
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Roger Warin
Joined: 23 Jan 2013
Posts: 1175
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| Posted: Sep 28, 2013 12:29 Post subject: Re: Collection of Michael Shaw |
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Many thanks Michael.
Roger.
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4892
Location: Barcelona
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2066
Location: Oklahoma
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| Posted: Sep 30, 2013 10:43 Post subject: Re: Collection of Michael Shaw |
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With today's post, I will finish showing our collection of specimens from Pakistan. Next up will be a country with a seemingly inexhaustible supply of minerals - China.
| Description: |
Topaz
Mango, Shigar Valley, Gilgit-Baltistan, Pakistan
2.1 x 3.4 cm.
A gemmy loose crystal of sherry-colored topaz. |
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27872 Time(s) |
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| Description: |
Fluorapatite
Haramosh Mts., Skardu District, Gilgit-Baltistan, Pakistan
3.5 x 4.5 cm.
Glassy pink translucent crystal of fluorapatite associated with minor muscovite. |
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27905 Time(s) |
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| Description: |
Forsterite
Sapat Gali, Naran-Kaghan, Khyber Pakhtunkhwa, Pakistan
3.5 x 4.6 cm.
A group of partly gemmy green peridot crystals. |
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27955 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2066
Location: Oklahoma
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| Posted: Oct 03, 2013 15:33 Post subject: Re: Collection of Michael Shaw |
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While I am gathering photos and info for the next installment which will feature China, I decided to show this little aquamarine which I recently acquired at the Denver Show. I have never been very successful in being able to photograph gem crystals, showing their transparency, so I spent some time experimenting with some different lighting arrangements until I came up with the image below. I'm pretty happy with the result, and I think I learned quite a bit about the best way to light these kinds of specimens.
Michael
| Description: |
Beryl var. aquamarine
Doi Ty Mine, Thuong Xuan District, Thanh Hoa Prov., Vietnam
1.5 x 3.5 cm |
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27919 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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| Posted: Oct 03, 2013 15:44 Post subject: Re: Collection of Michael Shaw |
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Michael, that last aquamarine is a real gem and your photography is superb as always.
Don
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2066
Location: Oklahoma
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| Posted: Oct 03, 2013 16:01 Post subject: Re: Collection of Michael Shaw |
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| Don Lum wrote: | Michael, that last aquamarine is a real gem and your photography is superb as always.
Don |
Thanks Don. I thought you might attend the Denver Show, so looked for you. I would have introduced myself if I saw you.
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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| Posted: Oct 03, 2013 17:10 Post subject: Re: Collection of Michael Shaw |
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| crosstimber wrote: | | Don Lum wrote: | Michael, that last aquamarine is a real gem and your photography is superb as always.
Don |
Thanks Don. I thought you might attend the Denver Show, so looked for you. I would have introduced myself if I saw you. |
I look forward to meeting you, Michael.
Don
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John S. White
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Joined: 04 Sep 2006
Posts: 1295
Location: Stewartstown, Pennsylvania, USA
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| Posted: Oct 03, 2013 19:53 Post subject: Re: Collection of Michael Shaw |
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Michael:
I don't understand how you can say that you are not successful in photographing gem crystals. Your photo of the topaz is one of the very best images of that mineral that I have ever seen. Wish you had tried to locate me in Denver. Perhaps we can meet in Tucson. I want to meet Don as well.
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John S. White
aka Rondinaire |
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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| Posted: Oct 03, 2013 20:11 Post subject: Re: Collection of Michael Shaw |
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| John S. White wrote: | Michael:
I don't understand how you can say that you are not successful in photographing gem crystals. Your photo of the topaz is one of the very best images of that mineral that I have ever seen. Wish you had tried to locate me in Denver. Perhaps we can meet in Tucson. I want to meet Don as well. |
Mr. White,
It would be an honor to meet you.
Don
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2066
Location: Oklahoma
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| Posted: Oct 04, 2013 08:49 Post subject: Re: Collection of Michael Shaw |
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| John S. White wrote: | Michael:
I don't understand how you can say that you are not successful in photographing gem crystals. Your photo of the topaz is one of the very best images of that mineral that I have ever seen. Wish you had tried to locate me in Denver. Perhaps we can meet in Tucson. I want to meet Don as well. |
John,
Well, I guess for me, creating a successful image is measured against photographs by many of the talented photographers for Mineralogical Record, Rocks & Minerals, and other noteworthy mineral publications. I tend to be my own worst critic - but that's how we improve. I certainly appreciate your comment regarding my topaz photo, and take it as a big compliment. Actually that image was taken a couple of days earlier than the beryl, and I more or less stumbled onto the setup. Since I was happy with the result, I experimented further with the new lighting setup and was finally able to produce relatively consistent results.
I would be my pleasure to meet you sometime in the future. Perhaps, at Jordi's get together in Tucson, if space allows.
Michael
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2066
Location: Oklahoma
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| Posted: Oct 07, 2013 12:09 Post subject: Re: Collection of Michael Shaw |
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I have finally organized my photos, so today I would like to start a mineralogical journey through China. The next several posts will show specimens in our collection from the country which has turned into one of the most important and prolific specimen producers over the past decade.
| Description: |
Azurite
Tongshan Mine, Guichi Dist., Anhui Province, China
5.3 x 8.5 cm.
Dark blue platy crystals to 1 cm lining a shallow cavity in massive azurite with minor malachite. |
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| Viewed: |
27520 Time(s) |
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| Description: |
Spessartine
Wushan Mine, Tongbei, Yunxiao Co., Fujian Prov., China
7.0 x 10.0 cm
Sharp, reddish-orange spessartine crystals scattered over a matrix of orthoclase with several smoky quartz crystals. |
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27464 Time(s) |
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| Description: |
Spessartine
Wushan Mine, Tongbei, Yunxiao Co., Fujian Prov., China
2.0 x 2.3 cm |
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27498 Time(s) |
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| Description: |
Silver
Yueshan Ag-Pb-Zn deposit, Huangtun, Lujiang Co., Chaohu Prefecture, Anhui Province, China
2.5 x 3.2 cm. |
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27431 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4892
Location: Barcelona
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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| Posted: Oct 07, 2013 13:04 Post subject: Re: Collection of Michael Shaw |
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Michael, I heartily agree with Jordi. Beautiful.
Don
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appies
Joined: 29 Aug 2013
Posts: 13
Location: Veenendaal
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| Posted: Oct 07, 2013 16:01 Post subject: Re: Collection of Michael Shaw |
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| Love the spessartine!
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