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Don Lum
Joined: 03 Sep 2012
Posts: 2086
Location: Arkansas
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 Posted: Aug 11, 2014 17:52 Post subject: Re: Don Lum Collection |
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Thank you, Michael and Jordi.
Regards,
Don
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4317
Location: Barcelona
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| Posted: Aug 12, 2014 03:23 Post subject: Re: Don Lum Collection |
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| crosstimber wrote: | | ...There seems to be quite a lot of variation in the color and texture of the coatings, so I wonder if any of the other specimens have been analyzed. According to Mindat, all four minerals apparently occur as coatings on Stibnite from this locality. I now suspect that each specimen must be analyzed to know for sure what the coating is... |
We analyzed some specimens from this mine and in any of them the yellowish and the brownish coat was Stibiconite. The late Joan Viñals at this time said to me that is more common than we suppose that the brown stuff coating Stibnites is not Stibiconite but Sulfur. With different colors, but Sulfur.
About Mindat, the photos downloaded there are "photos downloaded" by the users, it don't means that Mindat guarantees the Stibiconite in this mine is just that the Mindat's users believe this, and it is true that is a common error to believe that the brown material from this mine is Stibiconite. You will find also some other images in Mindat from the same mine but labeled as "Sulfur"...
Mindat is permanently correcting this kind of errors but is more easy to correct something clearly wrong than something doubtful like this. As you said it is a possibility that the Stibiconite be present in the Stibnites from this mine, but as far as I know and by our analysis, we don't found Stibiconite there (BTW, Roméite Group currently... ;-)
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Don Lum
Joined: 03 Sep 2012
Posts: 2086
Location: Arkansas
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| Posted: Aug 13, 2014 22:45 Post subject: Re: Don Lum Collection |
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Fluorite
| Description: |
Fluorite spinel-twin, Beryl, Hyalite Opal, Muscovite
Erongo Mountain, Erongo Region, Namibia
7 x 6 cm
ex Charlie Key |
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| Viewed: |
17395 Time(s) |
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| Description: |
Fluorite spinel-twin, Beryl, Hyalite Opal, Muscovite
Erongo Mountain, Erongo Region, Namibia
7 x 6 cm
ex Charlie Key |
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| Viewed: |
17388 Time(s) |
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| Description: |
Fluorite spinel-twin, Beryl, Hyalite Opal, Muscovite
Erongo Mountain, Erongo Region, Namibia
7 x 6 cm
ex Charlie Key |
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| Viewed: |
17417 Time(s) |
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| Description: |
Fluorite
Montgomery Pass, Mineral County, Nevada, USA
4.7 x 4.3 cm |
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| Viewed: |
17416 Time(s) |
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| Description: |
Fluorite
Montgomery Pass, Mineral County, Nevada, USA
4.7 x 4.3 cm |
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| Viewed: |
17429 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2086
Location: Arkansas
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| Posted: Aug 14, 2014 21:33 Post subject: Re: Don Lum Collection |
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Fluorite
| Description: |
Fluorite, Bitumen
Minerva No. 1 Mine (Ozark-Mahoning No. 1 Mine) Ozark-Mahoning Group, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA
7 x 6.5 cm
Floater |
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| Viewed: |
17339 Time(s) |
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| Description: |
Fluorite, Bitumen
Minerva No. 1 Mine (Ozark-Mahoning No. 1 Mine) Ozark-Mahoning Group, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA
7 x 6.5 cm
Floater |
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| Viewed: |
17355 Time(s) |
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| Description: |
Fluorite, Calcite, Sphalerite
Minerva No. 1 Mine (Ozark-Mahoning No. 1 Mine) Ozark-Mahoning Group, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA
7.6 x 5.3 cm |
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| Viewed: |
17330 Time(s) |
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| Description: |
Fluorite, Calcite, Sphalerite
Minerva No. 1 Mine (Ozark-Mahoning No. 1 Mine) Ozark-Mahoning Group, Cave-in-Rock Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA
7.6 x 5.3 cm |
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| Viewed: |
17352 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2086
Location: Arkansas
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| Posted: Aug 15, 2014 13:24 Post subject: Re: Don Lum Collection |
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Fluorite
| Description: |
Fluorite, Quartz
Berbes Mining area, Ribadesella, Asturias, Spain
4.9 x 4.0 cm |
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| Viewed: |
17298 Time(s) |
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| Description: |
Fluorite, Quartz
Berbes Mining area, Ribadesella, Asturias, Spain
4.9 x 4.0 cm |
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| Viewed: |
17300 Time(s) |
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| Description: |
Fluorite, Quartz
Berbes Mining area, Ribadesella, Asturias, Spain
4.9 x 4.0 cm |
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| Viewed: |
17322 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2086
Location: Arkansas
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| Posted: Sep 01, 2014 18:39 Post subject: Re: Don Lum Collection |
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Herkimer Quartz
| Mineral: | Quartz |
| Locality: | | Herkimer County, New York, USA |  |
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| Dimensions: | 15 x 11.5 cm |
| Description: |
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| Viewed: |
17103 Time(s) |
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| Mineral: | Quartz |
| Locality: | | Herkimer County, New York, USA | |
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| Dimensions: | 15 x 11.5 cm |
| Description: |
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| Viewed: |
17128 Time(s) |
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| Mineral: | Quartz |
| Locality: | | Herkimer County, New York, USA | |
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| Dimensions: | 10 x 9 cm |
| Description: |
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| Viewed: |
17099 Time(s) |
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| Mineral: | Quartz |
| Locality: | | Herkimer County, New York, USA | |
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| Dimensions: | 10 x 9 cm |
| Description: |
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| Viewed: |
17111 Time(s) |
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| Mineral: | Quartz |
| Locality: | | Herkimer County, New York, USA | |
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| Dimensions: | 10 x 9 cm |
| Description: |
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| Viewed: |
17103 Time(s) |
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| Mineral: | Quartz |
| Locality: | | Herkimer County, New York, USA | |
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| Dimensions: | 11 x 11 x 6 cm |
| Description: |
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| Viewed: |
17120 Time(s) |
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| Mineral: | Quartz |
| Locality: | | Herkimer County, New York, USA | |
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| Dimensions: | 11 x 11 x 6 cm |
| Description: |
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| Viewed: |
17133 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2086
Location: Arkansas
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| Posted: Sep 01, 2014 18:50 Post subject: Re: Don Lum Collection |
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Almandine, Graphite
| Mineral: | Almandine, Graphite |
| Locality: | | Red Embers Mine, Erving, Franklin County, Massachusetts, USA | |
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| Dimensions: | 11.1 x 8 cm |
| Description: |
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| Viewed: |
17115 Time(s) |
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| Mineral: | Almandine, Graphite |
| Locality: | | Red Embers Mine, Erving, Franklin County, Massachusetts, USA | |
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| Dimensions: | 11.1 x 8 cm |
| Description: |
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| Viewed: |
17127 Time(s) |
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Jamison Brizendine
Joined: 27 Feb 2014
Posts: 128
Location: Northeast Ohio
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| Posted: Sep 02, 2014 14:42 Post subject: Re: Don Lum Collection |
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Don,
What a cool picture of that almandine backlit (IMG_3814.JPG, page 29). I have also enjoyed the various specimens from Cave-in-Rock IL-KY Fluorspar District. I especially enjoyed the etched fluorite (IMG_3702.JPG, page 28) and the fluorite, calcite, sphalerite specimen (IMG_3695.JPG, page 28).
I also agree with Pierre about the beauty of the crocoite (IMG_3664.JPG, page 28) specimen and the combination fluorite and rhodochrosite (IMG_3536.JPG, page 28) specimen from China. Those are really nice examples of both specimens from those localities.
I am not sure that IMG_3650 (The Fluorite, calcite, chalcopyrite specimen, page 28) may be from the Hill-Ledford Mine. The fluorite specimens that I have typically seen from H-L are purple to very dark purple in color. I don’t think I have seen any specimens that are color zoned and/or are associated with chalcopyrite.
I have also seen Hill-Ledford fluorite specimens with what I call “domed sections”, that is fluorite crystallizing over earlier baryte (AM has an example of this kind of fluorite on his Mindat page). I am not sure what mine it could have originated from, but probably either Minerva #1 or the Annabel Lee Mine.
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Don Lum
Joined: 03 Sep 2012
Posts: 2086
Location: Arkansas
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| Posted: Sep 02, 2014 16:20 Post subject: Re: Don Lum Collection |
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| Jamison Brizendine wrote: | | ...I am not sure that IMG_3650 (The Fluorite, calcite, chalcopyrite specimen, page 28) may be from the Hill-Ledford Mine. The fluorite specimens that I have typically seen from H-L are purple to very dark purple in color. I don’t think I have seen any specimens that are color zoned and/or are associated with chalcopyrite... |
Hello Jamison,
Thank you for your kind comments on the specimens that I have posted.
I think that you are correct about the Fluorite IMG_3650. I agree with you that it looks like MInerva #1 or Annabel Lee. I have even posted fluorite specimens on FMF from Hill-Ledford that are purple. I will change my label. I have several specimens from older collections that are either not labelled at all or incorrectly labelled. I am making an attempt to correctly label these.
Don
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michael shaw
Site Admin
Joined: 30 Apr 2008
Posts: 1421
Location: Oklahoma
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| Posted: Sep 02, 2014 16:30 Post subject: Re: Don Lum Collection |
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Don,
I echo Jamison's comment about the Red Embers Mine almandine specimen. Very neat piece. I'm not familiar with the locality - is it a relatively new piece?
Michael
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4317
Location: Barcelona
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Don Lum
Joined: 03 Sep 2012
Posts: 2086
Location: Arkansas
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| Posted: Sep 02, 2014 19:05 Post subject: Re: Don Lum Collection |
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Thank you very much, Jordi.
Don
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Don Lum
Joined: 03 Sep 2012
Posts: 2086
Location: Arkansas
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| Posted: Sep 02, 2014 19:21 Post subject: Re: Don Lum Collection |
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| crosstimber wrote: | Don,
I echo Jamison's comment about the Red Embers Mine almandine specimen. Very neat piece. I'm not familiar with the locality - is it a relatively new piece?
Michael |
Michael,
From what information I have, these dark Almandine crystals are found in blades of metallic gray graphite schist. It is new material from the Red Embers Mine in Erving, Franklin County, Massachusetts and introduced at the East Coast Gem and Mineral Show in Springfield, Massachusetts last month. The miners spent 5 years mining and preparing the specimens (sandblasting and isolating the crystals so that light would shine through). It takes a couple of hours to prepare each specimen. The mine was originally called the Sky Farm, then renamed the Two Fat Boys Claim and now being mined by the family team of Jason, Kevin and Kyle Baskin.
Regards,
Don
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Don Lum
Joined: 03 Sep 2012
Posts: 2086
Location: Arkansas
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| Posted: Sep 02, 2014 19:47 Post subject: Re: Don Lum Collection |
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Zanazziite
| Mineral: | Zanazziite, Albite, Tourmaline |
| Locality: | | Lavra Ponte do Piauí, Piauí Valley, Taquaral, Itinga, Jequitinhonha, Minas Gerais, Brazil | |
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| Dimensions: | 9.4 x 2.4 x 2.5 cm |
| Description: |
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| Viewed: |
16982 Time(s) |
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michael shaw
Site Admin
Joined: 30 Apr 2008
Posts: 1421
Location: Oklahoma
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| Posted: Sep 02, 2014 19:51 Post subject: Re: Don Lum Collection |
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| Don Lum wrote: | | crosstimber wrote: | Don,
I echo Jamison's comment about the Red Embers Mine almandine specimen. Very neat piece. I'm not familiar with the locality - is it a relatively new piece?
Michael |
Michael,
From what information I have, these dark Almandine crystals are found in blades of metallic gray graphite schist. It is new material from the Red Embers Mine in Erving, Franklin County, Massachusetts and introduced at the East Coast Gem and Mineral Show in Springfield, Massachusetts last month. The miners spent 5 years mining and preparing the specimens (sandblasting and isolating the crystals so that light would shine through). It takes a couple of hours to prepare each specimen. The mine was originally called the Sky Farm, then renamed the Two Fat Boys Claim and now being mined by the family team of Jason, Kevin and Kyle Baskin.
Regards,
Don |
Thanks for the info. As a native of Massachusetts, I'll have to keep my eyes open for these in Denver.
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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| Posted: Sep 03, 2014 01:37 Post subject: Re: Don Lum Collection |
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Nice specimens Don! Best regards.
_________________
Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
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Don Lum
Joined: 03 Sep 2012
Posts: 2086
Location: Arkansas
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| Posted: Sep 03, 2014 09:29 Post subject: Re: Don Lum Collection |
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| Pierre Joubert wrote: | | Nice specimens Don! Best regards. |
Thank you, Pierre. Hi to Riana.
Best wishes,
Don
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Don Lum
Joined: 03 Sep 2012
Posts: 2086
Location: Arkansas
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| Posted: Sep 05, 2014 14:11 Post subject: Re: Don Lum Collection |
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Quartz from Guanajuato, Mexico. This specimen was identified for me by Dr. Peter Megaw last month in Dallas. I greatly appreciate his help.
| Mineral: | Quartz, Dolomite, Siderite |
| Locality: | | Municipio Guanajuato, Guanajuato, Mexico | |
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| Dimensions: | 19.5 x 15.5 cm |
| Description: |
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| Viewed: |
16709 Time(s) |
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| Mineral: | Quartz, Dolomite, Siderite |
| Locality: | | Municipio Guanajuato, Guanajuato, Mexico | |
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| Dimensions: | 19.5 x 15.5 cm |
| Description: |
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| Viewed: |
16701 Time(s) |
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| Mineral: | Quartz, Dolomite, Siderite |
| Locality: | | Municipio Guanajuato, Guanajuato, Mexico | |
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| Dimensions: | 19.5 x 15.5 cm |
| Description: |
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| Viewed: |
16724 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2086
Location: Arkansas
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| Posted: Sep 06, 2014 13:41 Post subject: Re: Don Lum Collection |
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Tsumeb
| Mineral: | Calcite, Malachite |
| Locality: | | Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia | |
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| Dimensions: | 10.5 x 7.5 cm |
| Description: |
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| Viewed: |
16640 Time(s) |
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| Mineral: | Calcite, Malachite |
| Locality: | | Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia | |
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| Description: |
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| Viewed: |
16646 Time(s) |
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| Mineral: | Cerussite, Mottramite |
| Locality: | | Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia | |
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| Dimensions: | 4.5 x 3.5 x 3.5 cm |
| Description: |
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| Viewed: |
16626 Time(s) |
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| Mineral: | Cerussite, Mottramite |
| Locality: | | Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia | |
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| Dimensions: | 4.5 x 3.5 x 3.5 cm |
| Description: |
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| Viewed: |
16613 Time(s) |
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| Mineral: | Cerussite, Mottramite |
| Locality: | | Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia | |
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| Dimensions: | 4.5 x 3.5 x 3.5 cm |
| Description: |
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| Viewed: |
16666 Time(s) |
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captaincaveman
Joined: 09 Dec 2010
Posts: 79
Location: Northamptonshire
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| Posted: Sep 06, 2014 13:54 Post subject: Re: Don Lum Collection |
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| Amazing specimens, especially the US Fluorites
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