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Don Lum Collection
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Don Lum




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PostPosted: Feb 20, 2013 18:03    Post subject: Re: Don Lum Collection  

Garnets in Schist


DSCN8745.JPG
 Description:
Almandine
Wrangell, Alaska, USA
19 x 13.3 x 5 cm
Garnets in Schist
 Viewed:  30078 Time(s)

DSCN8745.JPG



DSCN8746.JPG
 Description:
Almandine
Wrangell, Alaska, USA
19 x 13.3 x 5 cm
Garnets in Schist
 Viewed:  30096 Time(s)

DSCN8746.JPG



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Carles Millan
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PostPosted: Feb 22, 2013 15:59    Post subject: Re: Don Lum Collection  

Hi !

Both zincite photos are almost identical.

Are you sure such crystals are really natural? I've been carefully browsing zincite Mindat pages and have not been able to find anything like that. So I guess yours must be either a fake or an extraordinary find. What do you think?


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PostPosted: Feb 22, 2013 16:17    Post subject: Re: Don Lum Collection  

Hello Carles,

I believe that these crystals are synthetic zinc oxide. My understanding is that this is recovered as a by-product of zinc smelting.

Thanks.

Don

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PostPosted: Feb 22, 2013 16:20    Post subject: Re: Don Lum Collection  

Carles, I believe that the second photo is a little closer and with different lighting.
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Carles Millan
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PostPosted: Feb 22, 2013 16:52    Post subject: Re: Don Lum Collection  

Don Lum wrote:
I believe that these crystals are synthetic zinc oxide. My understanding is that this is recovered as a by-product of zinc smelting

Either this condition should be clearly notified along with the photos or the entire post deleted. I can do it for you. What do you prefer?
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PostPosted: Feb 22, 2013 19:36    Post subject: Re: Don Lum Collection  

delete the entire post



___________________________
Done (Feb. 23rd, 2013)
Thanks for your understanding!
Carles M.

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PostPosted: Feb 22, 2013 20:39    Post subject: Re: Don Lum Collection  

Jeffrey Quartz


P1040992.JPG
 Description:
Quartz
Jeffrey Quarry, Pulaski County, Arkansas, USA
5.6 x 3.4 x 1.2 cm
 Viewed:  29960 Time(s)

P1040992.JPG



P1050007.JPG
 Description:
Quartz
Jeffrey Quarry, Pulaski County, Arkansas, USA
4.5 x 3.5 x 2.3 cm
 Viewed:  29951 Time(s)

P1050007.JPG



P1050013.JPG
 Description:
Quartz
Jeffrey Quarry, Pulaski County, Arkansas, USA
4.0 x 3.3 x 3.0 cm
 Viewed:  29933 Time(s)

P1050013.JPG



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PostPosted: Feb 24, 2013 11:02    Post subject: Re: Don Lum Collection  

Phosphophyllite


P1050027.JPG
 Description:
Phosphophyllite
Cerro Rico, Potosi City, Potosi Department, Bolivia
4.5 x 4.4 x 2.5 cm
 Viewed:  29864 Time(s)

P1050027.JPG



P1050309.JPG
 Description:
Phosphophyllite
Cerro Rico, Potosi City, Potosi Department, Bolivia
4.5 x 4.4 x 2.5 cm
 Viewed:  29896 Time(s)

P1050309.JPG



P1050311.JPG
 Description:
Phosphophyllite
Cerro Rico, Potosi City, Potosi Department, Bolivia
4.5 x 4.4 x 2.5 cm
 Viewed:  29868 Time(s)

P1050311.JPG



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PostPosted: Feb 24, 2013 11:27    Post subject: Re: Don Lum Collection  

Phosphophyllite on Matrix


P1050294.JPG
 Description:
Phosphophyllite
Taja Lapis adit of the Wayllani Mine, Colavi-Machacamarca mining district, 60 km NE of Cerro Rico, Potosi, Bolivia
3.9 x 3 x 2 cm

Phosphophyllite on Matrix
 Viewed:  29840 Time(s)

P1050294.JPG



P1050295.JPG
 Description:
Phosphophyllite
Taja Lapis adit of the Wayllani Mine, Colavi-Machacamarca mining district, 60 km NE of Cerro Rico, Potosi, Bolivia
3.9 x 3 x 2 cm
 Viewed:  29828 Time(s)

P1050295.JPG



Image4.jpg
 Description:
Phosphophyllite
Taja Lapis adit of the Wayllani Mine, Colavi-Machacamarca mining district, 60 km NE of Cerro Rico, Potosi, Bolivia
3.9 x 3 x 2 cm
close-up
 Viewed:  29863 Time(s)

Image4.jpg



Image5.jpg
 Description:
Phosphophyllite
Taja Lapis adit of the Wayllani Mine, Colavi-Machacamarca mining district, 60 km NE of Cerro Rico, Potosi, Bolivia
3.9 x 3 x 2 cm
 Viewed:  29847 Time(s)

Image5.jpg



Image6.jpg
 Description:
Phosphophyllite
Taja Lapis adit of the Wayllani Mine, Colavi-Machacamarca mining district, 60 km NE of Cerro Rico, Potosi, Bolivia
3.9 x 3 x 2 cm
 Viewed:  29846 Time(s)

Image6.jpg



Image7.jpg
 Description:
Phosphophyllite
Taja Lapis adit of the Wayllani Mine, Colavi-Machacamarca mining district, 60 km NE of Cerro Rico, Potosi, Bolivia
3.9 x 3 x 2 cm
 Viewed:  29820 Time(s)

Image7.jpg



Image10.jpg
 Description:
Phosphophyllite
Taja Lapis adit of the Wayllani Mine, Colavi-Machacamarca mining district, 60 km NE of Cerro Rico, Potosi, Bolivia
3.9 x 3 x 2 cm
 Viewed:  29820 Time(s)

Image10.jpg



Image12.jpg
 Description:
Phosphophyllite
Taja Lapis adit of the Wayllani Mine, Colavi-Machacamarca mining district, 60 km NE of Cerro Rico, Potosi, Bolivia
3.9 x 3 x 2 cm
 Viewed:  29893 Time(s)

Image12.jpg



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PostPosted: Feb 28, 2013 14:06    Post subject: Re: Don Lum Collection  

Phosphophyllite


P1050293.JPG
 Description:
Phosphophyllite
Taja Lapis adit of the Wayllani Mine, Colavi-Machacamarca mining district, 60 km NE of Cerro Rico, Potosi, Bolivia
3.9 x 3 x 2 cm
 Viewed:  29836 Time(s)

P1050293.JPG



P1050296.JPG
 Description:
Phosphophyllite
Huayllani Infiernillos Mine, Huayllani Machacamarca District, Saavedra Province, Potosi Department, Bolivia
4.7 x 2.8 x 2.4 cm
 Viewed:  29755 Time(s)

P1050296.JPG



P1050306.JPG
 Description:
Phosphophyllite
Huayllani Infiernillos Mine, Huayllani Machacamarca District, Saavedra Province, Potosi Department, Bolivia
4.7 x 2.8 x 2.4 cm
 Viewed:  29817 Time(s)

P1050306.JPG



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PostPosted: Feb 28, 2013 22:16    Post subject: Re: Don Lum Collection  

Rhodochrosite


P1050326.JPG
 Description:
Rhodochrosite
Hotazel, Kalahari Manganese Fields, Northern Cape Province, South Africa
7.2 x 4.0 x 3.0 cm
 Viewed:  29665 Time(s)

P1050326.JPG



P1050328.JPG
 Description:
Rhodochrosite
Hotazel, Kalahari Manganese Fields, Northern Cape Province, South Africa
7.2 x 4.0 x 3.0 cm
 Viewed:  29708 Time(s)

P1050328.JPG



P1050337.JPG
 Description:
Rhodochrosite
N'Chwaning Mine near Kurman, North Cape Province, South Africa
5.4 x 3.0 x 2.4 cm
 Viewed:  29704 Time(s)

P1050337.JPG



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PostPosted: Mar 01, 2013 13:25    Post subject: Re: Don Lum Collection  

Rhodochrosite


P1050331.JPG
 Description:
Rhodochrosite, Fluorite ,Apatite, Pyrite
Wutong Mine, Liubao Wuzhou, Guangxi Zhuang. A.R., China
6.8 x 4.3 x 2.7 cm
 Viewed:  29638 Time(s)

P1050331.JPG



P1050340.JPG
 Description:
Rhodochrosite
Wutong (Wudong) Mine, Liubao Wuzhou, Guangxi Zhuang. A.R., China
3.3 x 3.0 x 2.5 cm
 Viewed:  29635 Time(s)

P1050340.JPG



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PostPosted: Mar 01, 2013 15:06    Post subject: Re: Don Lum Collection  

I want to continue with the Rhodochrosites. I apologize for the poor photography of this Rhodochrosite specimen. It actually looks better in person than in the pictures, but I think a lot of crystals do.


P1050465.JPG
 Description:
Rhodochrosite
Uchucchacua Mine, Oyon Province, Lima Department, Peru
10 x 9.5 x 6.9 cm
 Viewed:  29480 Time(s)

P1050465.JPG



P1050475.JPG
 Description:
Rhodochrosite
Uchucchacua Mine, Oyon Province, Lima Department, Peru
10 x 9.5 x 6.9 cm
 Viewed:  29531 Time(s)

P1050475.JPG



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PostPosted: Mar 01, 2013 15:51    Post subject: Re: Don Lum Collection  

Don,
I like your Uchucchaqua rhodochrosite. I think if you photographed it against a more neutral background the piece would look much better. I am certainly not an expert when it comes to photographing minerals, but I have found that brightly colored backgrounds tend to overwhelm most specimens. Just a suggestion.
Michael
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PostPosted: Mar 01, 2013 16:09    Post subject: Re: Don Lum Collection  

crosstimber wrote:
Don,
I like your Uchucchaqua rhodochrosite. I think if you photographed it against a more neutral background the piece would look much better. I am certainly not an expert when it comes to photographing minerals, but I have found that brightly colored backgrounds tend to overwhelm most specimens. Just a suggestion.
Michael


Thank you for your suggestion, Michael. I will do it.

Regards,

Don

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PostPosted: Mar 01, 2013 17:26    Post subject: Re: Don Lum Collection  

Hello Michael, I am following your suggestion about using a more neutral background.

Thank you.

Don



P1050493.JPG
 Description:
Rhodochrosite
Uchucchacua Mine, Oyon Province, Lima Department, Peru
10 x 9.5 x 6.9 cm
 Viewed:  29499 Time(s)

P1050493.JPG



P1050498.JPG
 Description:
Rhodochrosite
Uchucchacua Mine, Oyon Province, Lima Department, Peru
10 x 9.5 x 6.9 cm
 Viewed:  29499 Time(s)

P1050498.JPG



P1050501.JPG
 Description:
Rhodochrosite
Uchucchacua Mine, Oyon Province, Lima Department, Peru
10 x 9.5 x 6.9 cm
 Viewed:  29446 Time(s)

P1050501.JPG



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PostPosted: Mar 01, 2013 18:33    Post subject: Re: Don Lum Collection  

In my opinion these last shots are much better Don. Of course the best judge is you. I trust that you will agree that the neutral background shows off the piece much better.
Michael
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PostPosted: Mar 01, 2013 20:17    Post subject: Re: Don Lum Collection  

crosstimber wrote:
In my opinion these last shots are much better Don. Of course the best judge is you. I trust that you will agree that the neutral background shows off the piece much better.
Michael


These definitely show off the mineral better. You may also want to try a black background. Its interesting how changing the background affects one's perception of the specimen.
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PostPosted: Mar 01, 2013 23:24    Post subject: Re: Don Lum Collection  

I agree. Thank you for your help and comments, Michael.

Don

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PostPosted: Mar 01, 2013 23:29    Post subject: Re: Don Lum Collection  

Thank you for your comments, Gneissware.
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