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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Jun 11, 2017 19:00 Post subject: Re: Don Lum Collection |
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Don Lum wrote: | crosstimber wrote: | We looked through quite a few of these in Tucson. Most were poorly crystallized and failed to demonstrate a good color change. Yours is nice on both counts - congrats. |
Thank you, Michael. I took a few more pictures of this specimen today and if they are better, I will post later. |
Mineral: | Chrysoberyl (variety Alexandrite) |
Locality: | Novello Mine, Masvingo (Fort Victoria), Masvingo District, Masvingo Province, Zimbabwe | |
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Dimensions: | 34 mm x 24 mm x 17 mm |
Description: |
Sixling Twin, incandescent |
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Viewed: |
19177 Time(s) |
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Mineral: | Chrysoberyl (variety Alexandrite) |
Locality: | Novello Mine, Masvingo (Fort Victoria), Masvingo District, Masvingo Province, Zimbabwe | |
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Dimensions: | 34 mm x 24 mm x 17 mm |
Description: |
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19218 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Jun 11, 2017 19:05 Post subject: Re: Don Lum Collection |
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Muscovite after Tourmaline
Mineral: | Muscovite after Tourmaline |
Locality: | Sapo Mine, Ferruginha, Conselheiro Pena, Vale do Rio Doce, Minas Gerais, Brazil | |
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Dimensions: | 82 mm x 37 mm x 35 mm |
Description: |
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Viewed: |
19191 Time(s) |
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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1469
Location: Catalonia
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Andreas Gerstenberg
Joined: 04 Mar 2010
Posts: 336
Location: Chemnitz
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Posted: Jun 12, 2017 08:41 Post subject: Re: Don Lum Collection |
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A nice piece, indeed. However, i doubt that the specimen was collected pre-1910. The first time the Wolf mine was mentioned was in 1904, actually. The first rhodo specimens that came out here (in the 1920s or so) were rather ugly. More or less all of the "classic" good pieces were found in the 1950s and 1960s before the mine closed in 1962.
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Jun 12, 2017 11:09 Post subject: Re: Don Lum Collection |
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Carles, thank you for your kind words. I appreciate the compliment.
Best wishes,
Don
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Jun 15, 2017 11:32 Post subject: Re: Don Lum Collection |
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Mexico
Mineral: | Calcite |
Locality: | Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua, Mexico | |
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Dimensions: | 85 mm x 46 mm x 40 mm |
Description: |
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18928 Time(s) |
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Mineral: | Rosasite |
Locality: | Ojuela Mine, Mapimí, Municipio Mapimí, Durango, Mexico | |
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Dimensions: | 40 mm x 35 mm x 15 mm |
Description: |
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Viewed: |
18894 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Jun 18, 2017 21:58 Post subject: Re: Don Lum Collection |
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Namibia
Mineral: | Fluorite, Quartz |
Locality: | Karibib District, Erongo Region, Namibia | |
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Dimensions: | 26 mm x 22 x 11 mm |
Description: |
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Viewed: |
18814 Time(s) |
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Mineral: | Cerussite |
Locality: | Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia | |
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Dimensions: | 33 mm x 33 mm x 29 mm |
Description: |
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18811 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Jun 22, 2017 17:07 Post subject: Re: Don Lum Collection |
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Goethite
Mineral: | Goethite |
Locality: | Kalahari manganese field (KMF), Northern Cape Province, South Africa | |
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Dimensions: | 100 mm x 70 mm x 50 mm |
Description: |
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Viewed: |
18612 Time(s) |
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Mineral: | Goethite |
Locality: | Kalahari manganese field (KMF), Northern Cape Province, South Africa | |
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Dimensions: | 100 mm x 70 mm x 50 mm |
Description: |
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Viewed: |
18652 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Jun 23, 2017 17:55 Post subject: Re: Don Lum Collection |
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Plumbogummite after Pyromorphite
Mineral: | Plumbogummite after Pyromorphite |
Locality: | Yangshuo / Laohu area, Haiyang Mountains, Guilin Prefecture, Guangxi Zhuang Autonomous Region, China | |
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Dimensions: | 71 mm x 64 mm x 58 mm |
Description: |
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18519 Time(s) |
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Mineral: | Plumbogummite after Pyromorphite |
Locality: | Yangshuo / Laohu area, Haiyang Mountains, Guilin Prefecture, Guangxi Zhuang Autonomous Region, China | |
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Dimensions: | 71 mm x 64 mm x 58 mm |
Description: |
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18524 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Jun 24, 2017 10:55 Post subject: Re: Don Lum Collection |
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Pyrite, Sphalerite
Mineral: | Pyrite, Sphalerite |
Locality: | Huanzala Mine, Huallanca District, Dos de Mayo Province, Huánuco Department, Peru | |
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Dimensions: | 52 mm x 36 mm x 29 mm |
Description: |
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Viewed: |
18472 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Jun 25, 2017 13:02 Post subject: Re: Don Lum Collection |
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Apatite, Quartz
Mineral: | Apatite, Quartz |
Locality: | Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal | |
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Dimensions: | 86 mm x 53 mm x 35 mm |
Description: |
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Viewed: |
18358 Time(s) |
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Mineral: | Apatite, Quartz |
Locality: | Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal | |
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Dimensions: | 86 mm x 53 mm x 35 mm |
Description: |
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Viewed: |
18392 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Jul 01, 2017 22:38 Post subject: Re: Don Lum Collection |
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Pakistan
Mineral: | Elbaite (Tourmaline Group), Quartz, Albite (var cleavelandite) |
Locality: | Stak Nala, Haramosh Mountains, Skardu District, Gilgit-Baltistan (Northern Areas), Pakistan | |
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Dimensions: | 55 mm x 38 mm x 29 mm |
Description: |
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18250 Time(s) |
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Mineral: | Pollucite |
Locality: | Dassu, Braldu Valley, Shigar District, Gilgit-Baltistan (Northern Areas), Pakistan | |
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Dimensions: | 86 mm x 40 mm x 27mm |
Description: |
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Viewed: |
18273 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4102
Location: Germany
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Posted: Jul 02, 2017 03:00 Post subject: Re: Don Lum Collection |
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Don Lum wrote: | Elbaite, Quartz, Albite
Locality: Stak Nala, Haramosh Mountains, Skardu District, Baltistan, Gilgit-Baltistan (Northern Areas), Pakistan
ex Richard Burns | A quite unusual elbaite specimen from Stak Nala, compared to most others I've seen. Most of them have a colour scheme of green, black, grey, white and sometimes a pale pink, and they're also translucent instead of transparent. But the crystals on your specimen seem to be gemmy and to have an upper part that is blue. This makes it a remarkable specimen for me, even though it is neither large nor spectacular.
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Jul 02, 2017 12:21 Post subject: Re: Don Lum Collection |
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Tobi wrote: | Don Lum wrote: | Elbaite, Quartz, Albite
Locality: Stak Nala, Haramosh Mountains, Skardu District, Baltistan, Gilgit-Baltistan (Northern Areas), Pakistan
ex Richard Burns | A quite unusual elbaite specimen from Stak Nala, compared to most others I've seen. Most of them have a colour scheme of green, black, grey, white and sometimes a pale pink, and they're also translucent instead of transparent. But the crystals on your specimen seem to be gemmy and to have an upper part that is blue. This makes it a remarkable specimen for me, even though it is neither large nor spectacular. |
Thank you for your comment, Tobi. It appears to be Indicolite at the tip of the main crystal with a thin layer of Achroite between the Indicolite and the Verdite. It is very nice to hear from you.
Don
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Jul 02, 2017 16:18 Post subject: Re: Don Lum Collection |
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Pyromorphite, Germany
Mineral: | Pyromorphite |
Locality: | Gute Hoffnung Mine, (Bescheid), Bleibuir, Mechernich, Euskirchen, Eifel, Rhineland-Palatinate/Rheinland-Pfalz, Germany | |
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Dimensions: | 93 mm x 75 mm x 30 mm |
Description: |
Pyromorphite on sandstone |
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Viewed: |
18152 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Jul 03, 2017 11:52 Post subject: Re: Don Lum Collection |
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Calcite, Marcasite
Mineral: | Calcite, Marcasite |
Locality: | Berry Materials Corp. Quarry, North Vernon, Jennings County, Indiana, USA | |
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Dimensions: | 60 mm x 44 mm x 43 mm |
Description: |
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Viewed: |
18005 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4102
Location: Germany
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Posted: Jul 03, 2017 12:45 Post subject: Re: Don Lum Collection |
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Don Lum wrote: | Pyromorphite
Locality: Gute Hoffnung Mine, (Bescheid), Bleibuir, Mechernich, Euskirchen, Eifel, Rhineland-Palatinate/Rheinland-Pfalz, Germany | Nice pyro, Don, I guess it is a pale photo and the green is more intense in person ;-) Those pyromorphites from Gute Hoffnung have become bulk during the last years, at least here in Germany you can get large specimens for a very small price. I guess it's because a lot of them were found and the pyromorphite, though it has a great deep-green colour, does not occur in large well-defined crystals. But though these specimens are the bargain among several expensive German pyromorphites, I think they are really nice. I had several visitors (non-mineral people) who looked at my collection and said that this vivid-green pyro was one of their favourite specimens, some of them even asked if the colour is real ;-)
This is my specimen (4,5 cm) from that locality, I love it for its colour and it looks good even between some noble relatives from Bad Ems or Saxony: https://www.mineral-forum.com/message-board/download.php?id=35024
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Jul 04, 2017 15:58 Post subject: Re: Don Lum Collection |
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4th of July Collection
Mineral: | Rhodochrosite |
Locality: | Sweet Home Mine, Mount Bross, Alma District, Park County, Colorado, USA | |
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Dimensions: | 90 mm x 85 mm |
Description: |
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Viewed: |
18010 Time(s) |
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Mineral: | Barite, Fluorite, Dolomite, Quartz |
Locality: | Elmwood Mine, Carthage, Central Tennessee Ba-F-Pb-Zn District, Smith County, Tennessee, USA | |
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Dimensions: | 93 mm x 80 mm x 55 mm |
Description: |
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17874 Time(s) |
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Mineral: | Benitoite |
Locality: | California State Gem Mine (Benitoite Gem Mine), San Benito River headwaters area, Santa Rita Peak, New Idria District, San Benito County, California, USA | |
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Dimensions: | 35 mm x 25 mm x 21 mm |
Description: |
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Viewed: |
17856 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
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Posted: Jul 08, 2017 15:38 Post subject: Re: Don Lum Collection |
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Magnetite
Mineral: | Magnetite |
Locality: | Laila base camp area, Ghanche District, Gilgit-Baltistan (Northern Areas), Pakistan | |
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Dimensions: | 45 mm x 25 mm x 17 mm |
Description: |
Completely striated finely tiered offset Magnetite crystals with a gray-black metallic luster. ex Dr. Ed David ex Herb Obodda Illustrated Sisk Gemology Reference, Volume 2, page 81 |
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Viewed: |
17704 Time(s) |
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Mineral: | Magnetite |
Locality: | Laila base camp area, Ghanche District, Gilgit-Baltistan (Northern Areas), Pakistan | |
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Dimensions: | 45 mm x 25 mm x 17 mm |
Description: |
Completely striated finely tiered offset Magnetite crystals with a gray-black metallic luster. ex Dr. Ed David ex Herb Obodda Illustrated Sisk Gemology Reference, Volume 2, page 81 |
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Viewed: |
17714 Time(s) |
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Mineral: | Magnetite |
Locality: | Laila base camp area, Ghanche District, Gilgit-Baltistan (Northern Areas), Pakistan | |
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Dimensions: | 45 mm x 25 mm x 17 mm |
Description: |
Completely striated finely tiered offset Magnetite crystals with a gray-black metallic luster. ex Dr. Ed David ex Herb Obodda Illustrated Sisk Gemology Reference, Volume 2, page 81 |
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Viewed: |
17709 Time(s) |
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Mineral: | Magnetite |
Locality: | Laila base camp area, Ghanche District, Gilgit-Baltistan (Northern Areas), Pakistan | |
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Dimensions: | 45 mm x 25 mm x 17 mm |
Description: |
Completely striated finely tiered offset Magnetite crystals with a gray-black metallic luster. ex Dr. Ed David ex Herb Obodda Illustrated Sisk Gemology Reference, Volume 2, page 81 |
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Viewed: |
17737 Time(s) |
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Mineral: | Magnetite |
Locality: | Laila base camp area, Ghanche District, Gilgit-Baltistan (Northern Areas), Pakistan | |
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Dimensions: | 45 mm x 25 mm x 17 mm |
Description: |
Completely striated finely tiered offset Magnetite crystals with a gray-black metallic luster. ex Dr. Ed David ex Herb Obodda Illustrated Sisk Gemology Reference, Volume 2, page 81 |
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Viewed: |
17717 Time(s) |
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Mineral: | Magnetite |
Locality: | Laila base camp area, Ghanche District, Gilgit-Baltistan (Northern Areas), Pakistan | |
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Dimensions: | 45 mm x 25 mm x 17 mm |
Description: |
Completely striated finely tiered offset Magnetite crystals with a gray-black metallic luster. ex Dr. Ed David ex Herb Obodda Illustrated Sisk Gemology Reference, Volume 2, page 81 |
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Viewed: |
17789 Time(s) |
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Carles Millan
Site Admin
Joined: 05 May 2007
Posts: 1469
Location: Catalonia
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Posted: Jul 08, 2017 16:11 Post subject: Re: Don Lum Collection |
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Very very nice magnetite. I had never seen one with such a quality from Laila. I'd like a lot to own one as yours.
Laila is a not very known locality in Baltistan, in the Haramosh mountains area, north of Chamachhu and the famous Stak Nala. The most typical specimens are a rare kind of schorl with a very steep pyramidal tip, the pencil habit as John White named it. The exact location of Laila can be seen at https://carlesmillan.cat/maps/Pakistan.png at a blue pin not far from the geometrical center.
Congratulations!
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