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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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Posted: Mar 02, 2013 03:36 Post subject: Re: Don Lum Collection |
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Hi Don. I like the last Rhodo and also agree that the background is much better.
_________________ Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
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Don Lum
Joined: 03 Sep 2012
Posts: 2869
Location: Arkansas
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Posted: Mar 02, 2013 19:59 Post subject: Re: Don Lum Collection |
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Pierre Joubert wrote: | Hi Don. I like the last Rhodo and also agree that the background is much better. |
Thank you, Pierre.
Don
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Don Lum
Joined: 03 Sep 2012
Posts: 2869
Location: Arkansas
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Posted: Mar 02, 2013 20:15 Post subject: Re: Don Lum Collection |
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Rhodochrosite
Description: |
Rhodochrosite Sweet Home Mine, Mount Bross, Alma District, Park County, Colorado, USA 5.5 x 4.5 x 3.4 cm |
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33535 Time(s) |
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Rhodochrosite Sweet Home Mine, Mount Bross, Alma District, Park County, Colorado, USA 5.5 x 4.5 x 3.4 cm |
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33596 Time(s) |
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Rhodochrosite Ushkatan III Deposit, Zhayrem Area, Kazakhstan 7.4 x 5.5 x 3.4 cm Botryoidal Rhodochrosite |
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33553 Time(s) |
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Rhodochrosite Ushkatan III Deposit, Zhayrem Area, Kazakhstan 7.4 x 5.5 x 3.4 cm Botryoidal Rhodochrosite |
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33626 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2869
Location: Arkansas
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Posted: Mar 03, 2013 11:28 Post subject: Re: Don Lum Collection |
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Rhodochrosite
Description: |
Rhodochrosite, Fluorite, Chalcopyrite, Quartz Guangxi, China 5.5 x 4.5 x 2.8 cm |
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33531 Time(s) |
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Rhodochrosite Capillitas Mine, Catamarca, Argentina 5.3 x 4.0 x 3.2 cm (left), 5.3 x x 4.3 x 2.3 cm (right) Rhodochrosite Stalactite |
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33519 Time(s) |
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Rhodochrosite Capillitas Mine, Catamarca, Argentina 5.3 x 4.0 x 3.2 cm (left), 5.3 x x 4.3 x 2.3 cm (right) Rhodochrosite Stalactite |
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33522 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2869
Location: Arkansas
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Posted: Mar 04, 2013 23:16 Post subject: Re: Don Lum Collection |
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Some Botyroidal and Ball Fluorites
Description: |
Fluorite, Quartz Mahodari Quarry, near Nasik, Maharashtra Province, India 11.2 x 7.7 x 1.2 cm
Red Fluorite Balls on Quartz |
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33444 Time(s) |
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Fluorite, Quartz Mahodari Quarry, near Nasik, Maharashtra Province, India 11.2 x 7.7 x 1.2 cm
Red Fluorite Balls on Quartz |
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33451 Time(s) |
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Fluorite, Calcite Mahodari Quarry, near Nasik, Maharashtra Province, India 8.4 x 6.9 x 4.3 cm
Yellow Fluorite Balls on Calcite |
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33469 Time(s) |
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Fluorite, Quartz Nasik, Maharashtra Province, India 8.3 x 7.7 x 3.3 cm
Orange Fluorite Ball on Quartz |
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33502 Time(s) |
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Fluorite Minggang, Xinyang, Henan Province, China 16 x 12.5 x 3.3 cm |
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33491 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2869
Location: Arkansas
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Posted: Mar 07, 2013 00:32 Post subject: Re: Don Lum Collection |
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Some Botryroidal and Ball Fluorites
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Fluorite Wushan Mine, De'An Jiujang, Guangxi Province, China 15 x 11.6 x 7.3 cm |
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33400 Time(s) |
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Fluorite, Chalcedony Nasik, Maharashtra Province, India 10.8 x 3.5 x 3.0 cm
Blue Fluorite Balls on Drusy Chalcedony |
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33333 Time(s) |
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Fluorite, Chalcedony Nasik, Maharashtra Province, India 10.8 x 3.5 x 3.0 cm
Blue Fluorite Balls on Drusy Chalcedony |
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33391 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2869
Location: Arkansas
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Posted: Mar 10, 2013 16:28 Post subject: Re: Don Lum Collection |
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Botryoidal Fluorite
Description: |
Fluorite Minggang Fluorite Mine, Shihe District, Xinyang Prefecture, Henan Province, China 7.2 x 5.5 x 5.0 cm
Botryoidal Lilac Fluorite |
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33257 Time(s) |
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Fluorite Minggang Fluorite Mine, Shihe District, Xinyang Prefecture, Henan Province, China 7.2 x 5.5 x 5.0 cm
Botryoidal Lilac Fluorite |
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33284 Time(s) |
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Description: |
Fluorite Minggang Fluorite Mine, Shihe District, Xinyang Prefecture, Henan Province, China 7.2 x 4.4 x 2.8 cm
Stalactitic Botryoidal Fluorite |
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33291 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2869
Location: Arkansas
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Posted: Mar 14, 2013 14:30 Post subject: Re: Don Lum Collection |
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Native Silver
Description: |
Native Silver on Calcite Kongsberg Silver Mining District, Flesberg, Buskerud, Norway 5.7 x 2.9 x 2.2 cm
"The Cobra" |
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33141 Time(s) |
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Silver Wire on Matrix Lingqiu County, Shanxi Province, China 7.3 x 6.6 x 3.4 cm |
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33139 Time(s) |
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Silver Wire on Matrix Lingqiu County, Shanxi Province, China 7.3 x 6.6 x 3.4 cm |
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33169 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2869
Location: Arkansas
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Posted: Mar 16, 2013 16:48 Post subject: Re: Don Lum Collection |
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Native Silver Wire
Description: |
Silver Wire with Calcite Kongsberg Silver Mining District, Flesberg, Buskerud, Norway 3.7 x 2.0 x 2.7 cm |
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33026 Time(s) |
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Silver Wire with Calcite Kongsberg Silver Mining District, Flesberg, Buskerud, Norway 3.7 x 2.0 x 2.7 cm |
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33063 Time(s) |
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Silver Wire Freiberg District, Saxony, Germany 4.2 x 2.3 x 1.0 cm
Native Silver Wire
ex-Lloyd Tate |
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33079 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2869
Location: Arkansas
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Posted: Mar 17, 2013 12:33 Post subject: Re: Don Lum Collection |
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Silver
Description: |
Silver Kongsberg Silver Mine, Kongsberg, Buskerud, Norway 11.5 x 7.3 x 3.8 cm
ex-Wolfgang Henkel |
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33037 Time(s) |
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Silver Kongsberg Silver Mine, Kongsberg, Buskerud, Norway 11.5 x 7.3 x 3.8 cm
ex-Wolfgang Henkel |
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33076 Time(s) |
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Silver Kongsberg Silver Mine, Kongsberg, Buskerud, Norway 11.5 x 7.3 x 3.8 cm ex-Wolfgang Henkel |
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33015 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2869
Location: Arkansas
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Posted: Mar 19, 2013 20:20 Post subject: Re: Don Lum Collection |
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Native Elements
Description: |
Silver wires with Acanthite Imiter Mine, Ouarzazate Province, Morocco 4.7 x 3.6 x 2.9 cm |
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32924 Time(s) |
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Description: |
Silver and Copper Centennial Mine, Houghton, Michigan 6.3 x 4.1 x 3.2 cm
"Winged Victory"
ex-Carl Yagley |
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32882 Time(s) |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4906
Location: Barcelona
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Don Lum
Joined: 03 Sep 2012
Posts: 2869
Location: Arkansas
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Posted: Mar 20, 2013 13:21 Post subject: Re: Don Lum Collection |
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Dear Jordi,
I very much appreciate your suggestion and have read and reread every comment made regarding the fake silver from Morocco. When I buy a specimen from a dealer I always assume that it is legitimate. Sometimes I think that some dealers don't know when a specimen he has for sale is fake or real. This reinforces the principle that one should always buy from a reliable dealer. I also surmise that some dealers I have personally met at shows know less than I do about mineral specimens. I checked my specimen from Morocco as soon as I had the opportunity and looked for evidence of heating i.e. the brownish beige colors and bubbles as suggested by Joan. Quite honestly I still don't know if it is real or not. My gut feeling and I know those can be misleading is that it is real.
Ironically the next specimens I had intended to post were sulfurs from Sicily (noting Les' comments). This is in keeping with the native element theme.
I read John Veevaert's transcript of the interesting talk he gave on Fake Minerals at the Rocksaholics Symposium in Tucson this year. I discovered a manufactured/repaired/fake specimen soon thereafter by accident in my collection. If it would be of interest to any members of the Forum I will take pictures and post them this weekend.
Finally I would like to add that it seems that I am getting a lot more out of being a member of FMF than I am putting in.
Warm regards,
Don
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Mark Ost
Joined: 18 Mar 2013
Posts: 516
Location: Virginia Beach
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Posted: Mar 20, 2013 14:03 Post subject: Re: Don Lum Collection |
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Don, these are wonderful sawn sections. For all the world they look like light diffaction patterns in physics.
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Don Lum
Joined: 03 Sep 2012
Posts: 2869
Location: Arkansas
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Posted: Mar 21, 2013 19:12 Post subject: Re: Don Lum Collection |
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Silver, Quartz
Description: |
Silver, Quartz Kearsage Mine, Houghton County, Michigan 7.4 x 5.6 x 1.5 cm |
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32686 Time(s) |
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Description: |
Silver, Quartz Kearsage Mine, Houghton County, Michigan 7.4 x 5.6 x 1.5 cm |
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32665 Time(s) |
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Description: |
Silver, Quartz Kearsage Mine, Houghton County, Michigan 7.4 x 5.6 x 1.5 cm |
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32720 Time(s) |
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Silver, Quartz Kearsage Mine, Houghton County, Michigan 7.4 x 5.6 x 1.5 cm |
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32685 Time(s) |
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Silver, Quartz Kearsage Mine, Houghton County, Michigan 7.4 x 5.6 x 1.5 cm |
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32693 Time(s) |
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Silver, Quartz Kearsage Mine, Houghton County, Michigan 7.4 x 5.6 x 1.5 cm |
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32733 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2869
Location: Arkansas
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Posted: Mar 21, 2013 21:30 Post subject: Re: Don Lum Collection |
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Red Fluorite
Description: |
Fluorite. Pyrite Riemvasmaak, South Africa 16.5 x 8.7 x 5.0 cm |
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32694 Time(s) |
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Fluorite. Pyrite Riemvasmaak, South Africa 16.5 x 8.7 x 5.0 cm |
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32645 Time(s) |
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Fluorite. Pyrite Riemvasmaak, South Africa 16.5 x 8.7 x 5.0 cm |
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32632 Time(s) |
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Fluorite. Pyrite Riemvasmaak, South Africa 16.5 x 8.7 x 5.0 cm |
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32677 Time(s) |
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Don Lum
Joined: 03 Sep 2012
Posts: 2869
Location: Arkansas
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Posted: Mar 22, 2013 00:23 Post subject: Re: Don Lum Collection |
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Don Lum wrote: | Red Fluorite |
Two possible causes of this brownish red color are noted.
Denver Show report - Mineral Dealer USA - Kristalle
Oct 1, 2009 – ... for the room is the new green Fluorites from Riemsvasmaak in South Africa, ... Green Fluorites from Riemvasmaak with other locality Fluorites .... starts as colourless or yellow, and turns pinkish to brownish red with sunlight.
Peter Lyckberg on mindat forum September 17, 2011
Yes, certainly some fluorite do change color with light exposure.
A giant fluorite pod in skarn (with some small molybdenite as a ring a few cm from its edge) had very strong purple color (some even reddish) at the 220 m level of the Yxsjöberg mine and changed color upon sun exposure with time.
This fluorite was exceptionally easy to give some energy immediately taken up by valence electrons (and yes some heat and sound....) and then gradually lost in the form of a yellowish-green visible light emitted, if beating on it with the sledge hammer.
(or shone at by the head light, or heated....)
The color changed during the years to a light sky blue to finally become white and specimens then looking close to quartz.
Yes fluorite is a fairly dense mineral.
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4906
Location: Barcelona
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Posted: Mar 22, 2013 02:38 Post subject: Re: Don Lum Collection |
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Don Lum wrote: | ...Two possible causes of this brownish red color are noted.... |
Also here: Fluorite color centers from Elise Skalwold, and if you need more info just write "color centers" in the Forum's search:
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Don Lum
Joined: 03 Sep 2012
Posts: 2869
Location: Arkansas
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Posted: Mar 22, 2013 12:37 Post subject: Re: Don Lum Collection |
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Jordi Fabre wrote: | Don Lum wrote: | ...Two possible causes of this brownish red color are noted.... |
Also here: Fluorite color centers from Elise Skalwold, and if you need more info just write "color centers" in the Forum's search: |
Thank you so much, Jordi.
Have a nice weekend.
Regards,
Don
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Don Lum
Joined: 03 Sep 2012
Posts: 2869
Location: Arkansas
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Posted: Mar 22, 2013 12:56 Post subject: Re: Don Lum Collection |
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Silver
Description: |
Silver Imiter Mine, Boumalne-Dades, Ouarzazate Province, Souss-Massa-Draa Region, Morocco 10.5 x 7.1 x 3.7 cm |
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32381 Time(s) |
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Description: |
Silver Imiter Mine, Boumalne-Dades, Ouarzazate Province, Souss-Massa-Draa Region, Morocco 10.5 x 7.1 x 3.7 cm |
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32442 Time(s) |
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Description: |
Silver Imiter Mine, Boumalne-Dades, Ouarzazate Province, Souss-Massa-Draa Region, Morocco 10.5 x 7.1 x 3.7 cm |
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32461 Time(s) |
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Description: |
Silver Imiter Mine, Boumalne-Dades, Ouarzazate Province, Souss-Massa-Draa Region, Morocco 10.5 x 7.1 x 3.7 cm |
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32420 Time(s) |
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