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Tobi
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Joined: 07 Apr 2009
Posts: 4110
Location: Germany
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Posted: Oct 07, 2018 03:58 Post subject: Re: Collection of Michael Shaw |
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crosstimber wrote: | Quartz (variety smoky) and Microcline
Government Pit, Albany, Carroll County, New Hampshire, USA
Dimensions: 2.7 x 4.6 x 7.8 cm
Several transparent smoky quartz crystals associated with creamy microcline crystals and bladed white albite var. cleavelandite. | What a beauty, Michael! The overall shape, the contrast, the quality of the quartzes, just beautiful :-)
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2075
Location: Oklahoma
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Posted: Oct 07, 2018 10:09 Post subject: Re: Collection of Michael Shaw |
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Tobi wrote: | crosstimber wrote: | Quartz (variety smoky) and Microcline
Government Pit, Albany, Carroll County, New Hampshire, USA
Dimensions: 2.7 x 4.6 x 7.8 cm
Several transparent smoky quartz crystals associated with creamy microcline crystals and bladed white albite var. cleavelandite. | What a beauty, Michael! The overall shape, the contrast, the quality of the quartzes, just beautiful :-) |
Thanks Tobi. I was very happy to have the opportunity to acquire these two pieces.
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2075
Location: Oklahoma
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Posted: Oct 08, 2018 09:54 Post subject: Re: Collection of Michael Shaw |
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Mineral: | Marcasite |
Locality: | Linwood Mine, Buffalo, Scott County, Iowa, USA | |
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Dimensions: | 3.0 x 4.1 cm |
Description: |
Metallic, brass-yellow spear-shaped marcasite crystals to 3.2 cm with small colorless calcite crystals. |
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15016 Time(s) |
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vic rzonca
Joined: 18 Nov 2008
Posts: 820
Location: MA
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Posted: Oct 08, 2018 10:16 Post subject: Re: Collection of Michael Shaw |
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crosstimber wrote: | These pieces were collected by Ernie Schlichter, who collected there often. |
Ernie was a very serious field collector. Where the pry bars and the misc. steel that we lug into the field can be quite heavy, Ernie had the good sense to have his kit made from titanium.
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2075
Location: Oklahoma
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Posted: Oct 11, 2018 15:34 Post subject: Re: Collection of Michael Shaw |
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Mineral: | Rhodochrosite |
Locality: | Champion Mine, Cinnamon Pass, Lake City, Hinsdale County, Colorado, USA | |
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Dimensions: | 3.0 x 4.8 cm. |
Description: |
Pink rhombs of rhodocrosite to 5 mm covering a pyrite and quartz matrix. |
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14859 Time(s) |
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2075
Location: Oklahoma
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Posted: Oct 15, 2018 09:12 Post subject: Re: Collection of Michael Shaw |
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Mineral: | Silver |
Locality: | Fresnillo de González Echeverría (Fresnillo), Municipio Fresnillo, Zacatecas, Mexico | |
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Dimensions: | 1.0 x 2.1 cm |
Description: |
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14800 Time(s) |
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Tobi
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Joined: 07 Apr 2009
Posts: 4110
Location: Germany
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Posted: Oct 15, 2018 09:31 Post subject: Re: Collection of Michael Shaw |
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crosstimber wrote: | Rhodochrosite
Champion Mine, Cinnamon Pass, Lake City, Hinsdale County, Colorado, USA
Pink rhombs of rhodocrosite to 5 mm covering a pyrite and quartz matrix. | Lovely little specimen, Michael!
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2075
Location: Oklahoma
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Posted: Oct 18, 2018 09:30 Post subject: Re: Collection of Michael Shaw |
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Mineral: | Fluorite |
Locality: | Yongchun, Quanzhou Prefecture, Fujian Province, China | |
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Dimensions: | 2.1 x 2.9 cm |
Description: |
Cubic fluorite with well-developed decahedral modifications associated with transparent quartz crystals. |
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14700 Time(s) |
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Fiebre Verde
Joined: 11 Sep 2013
Posts: 942
Location: Paris Area
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Posted: Oct 18, 2018 09:55 Post subject: Re: Collection of Michael Shaw |
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crosstimber wrote: | Cubic fluorite with well-developed decahedral modifications associated with transparent quartz crystals. |
That's a stunning combination Michael!
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2075
Location: Oklahoma
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Posted: Oct 18, 2018 11:36 Post subject: Re: Collection of Michael Shaw |
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Fiebre Verde wrote: | crosstimber wrote: | Cubic fluorite with well-developed decahedral modifications associated with transparent quartz crystals. |
That's a stunning combination Michael! |
Thanks Gérard. I was very pleased to find this thumbnail piece. It is perfect and has pretty good aesthetics. The big ones were priced out of this world!
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James Catmur
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Joined: 14 Sep 2006
Posts: 1349
Location: Cambridge
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Posted: Oct 18, 2018 13:49 Post subject: Re: Collection of Michael Shaw |
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Wonderful
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2075
Location: Oklahoma
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Posted: Oct 24, 2018 09:24 Post subject: Re: Collection of Michael Shaw |
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Thanks James. Here's a fluorite a little closer to your neck of the woods :>)
Mineral: | Fluorite |
Locality: | Greenlaws Mine, Daddry Shield, Weardale, North Pennines Orefield, County Durham, England / United Kingdom | |
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Dimensions: | 5.6 x 9.7 x 12.7 cm |
Description: |
An intergrown group of glassy to frosted purple fluorite crystals to 3.5 cm on edge. Collected in 2018. |
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14651 Time(s) |
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2075
Location: Oklahoma
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Posted: Oct 25, 2018 09:10 Post subject: Re: Collection of Michael Shaw |
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Probably like many collectors, I have several pieces in my collection that would benefit from trimming excess matrix, broken crystals from the periphery, etc. I do not usually attempt to do this myself as I do not have the proper equipment. The specimen shown below is an exception - I have had it for a couple of years and it was relatively inexpensive, so I decided to take on the task yesterday. I was quite pleased with the result. I should have taken a photo of the specimen before trimming.
Mineral: | Calcite |
Locality: | Manaoshan Mine, Dongpo, Yizhang District, Chenzhou Prefecture, Hunan Province, China | |
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Dimensions: | 7.8 x 7.9 x 9.1 cm |
Description: |
A second generation of opaque pale gray calcite crystals to 3.2 cm growing on white scalenohedral calcites with flesh-colored dolomite crystals on a gray limestone matrix. |
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14441 Time(s) |
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2075
Location: Oklahoma
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Posted: Oct 26, 2018 10:54 Post subject: Re: Collection of Michael Shaw |
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Mineral: | Calcite |
Locality: | Carmen Mine (El Carmen Mine), West Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua, Mexico | |
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Dimensions: | 5.8 x 6.2 x 10.6 cm |
Description: |
Chocolate-brown scalenohedral calcite crystals to 5.5 cm in length. Small transparent quartz crystals are scattered over the calcites and the tips are coated with microcrystals of purple fluorite. |
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14386 Time(s) |
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Tobi
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Joined: 07 Apr 2009
Posts: 4110
Location: Germany
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Posted: Oct 28, 2018 04:45 Post subject: Re: Collection of Michael Shaw |
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crosstimber wrote: | Fluorite
Greenlaws Mine, Daddry Shield, Weardale, North Pennines Orefield, County Durham, England, United Kingdom
5.6 x 9.7 x 12.7 cm
Description: An intergrown group of glassy to frosted purple fluorite crystals to 3.5 cm on edge. Collected in 2018. | I love it!!! :-)
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2075
Location: Oklahoma
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Posted: Oct 29, 2018 08:27 Post subject: Re: Collection of Michael Shaw |
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Thanks Tobi, Here's another piece from the same mine.
Mineral: | Fluorite |
Locality: | Greenlaws Mine, Daddry Shield, Weardale, North Pennines Orefield, County Durham, England / United Kingdom | |
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Dimensions: | 4. 1 x 7.1 x 7.9 cm |
Description: |
Both of these pieces exhibit strong blue/purple fluorescence under LW UV light. |
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14248 Time(s) |
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2075
Location: Oklahoma
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Posted: Oct 31, 2018 14:53 Post subject: Re: Collection of Michael Shaw |
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Mineral: | Baryte |
Locality: | Sherman Mine, Upper Iowa Gulch, Leadville District, Lake County, Colorado, USA | |
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Dimensions: | 1.4 x 4.1 x 5.4 cm |
Description: |
A thin plate covered on both sides with semi-lustrous chisel-shaped golden-yellow barite crystals to 1.3 cm on edge. |
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14151 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4110
Location: Germany
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Posted: Nov 02, 2018 03:26 Post subject: Re: Collection of Michael Shaw |
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crosstimber wrote: | Probably like many collectors, I have several pieces in my collection that would benefit from trimming excess matrix, broken crystals from the periphery, etc. I do not usually attempt to do this myself as I do not have the proper equipment. The specimen shown below is an exception - I have had it for a couple of years and it was relatively inexpensive, so I decided to take on the task yesterday. I was quite pleased with the result. I should have taken a photo of the specimen before trimming. |
( https://www.mineral-forum.com/message-board/viewtopic.php?p=64516#64516 )
It looks perfect, you did a good job!
And yes, I know the "trimming dilemma". I also don't have the proper equipment, so the more expensive a specimen is, the more I hesitate to work on it. Most of us will know from sad experiences that the biggest crack often occurs in the wrong area of a specimen and that it's often the best crystal that falls off first :-(
I would never dare to trim valuable specimens by myself, but like you did it with that calcite, I sometimes work on specimens that would not make me hate myself too much when something goes wrong ... And as I said before, you did a perfect job on this one :-)
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Michael Shaw
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Location: Oklahoma
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Posted: Nov 02, 2018 09:56 Post subject: Re: Collection of Michael Shaw |
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Thanks Tobi, the volume of matrix that was removed was about equal to what is remains on the specimen currently. The trimmed off portion had a few nice but small calcite crystals on the dolomite, but it distracted from the dominant crystals. There is no better feeling than to have everything go according to plan when you undertake this kind of task :>)
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Michael Shaw
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Joined: 30 Apr 2008
Posts: 2075
Location: Oklahoma
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Posted: Nov 09, 2018 09:44 Post subject: Re: Collection of Michael Shaw |
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Mineral: | Calcite |
Locality: | Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua, Mexico | |
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Dimensions: | 5.2 x 8.1 x 9.1 cm |
Description: |
A mounded group of chocolate-brown dogtooth calcites to 2.0 cm. |
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13867 Time(s) |
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