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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:  22599 Time(s)

DSCN8745.JPG



DSCN8746.JPG
 Description:
Almandine
Wrangell, Alaska, USA
19 x 13.3 x 5 cm
Garnets in Schist
 Viewed:  22617 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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Don Lum




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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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Don Lum




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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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Don Lum




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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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Don Lum




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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:  22492 Time(s)

P1040992.JPG



P1050007.JPG
 Description:
Quartz
Jeffrey Quarry, Pulaski County, Arkansas, USA
4.5 x 3.5 x 2.3 cm
 Viewed:  22463 Time(s)

P1050007.JPG



P1050013.JPG
 Description:
Quartz
Jeffrey Quarry, Pulaski County, Arkansas, USA
4.0 x 3.3 x 3.0 cm
 Viewed:  22451 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:  22390 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:  22412 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:  22393 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:  22358 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:  22352 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:  22384 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:  22364 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:  22348 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:  22353 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:  22349 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:  22415 Time(s)

Image12.jpg



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Don Lum




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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:  22353 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:  22275 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:  22316 Time(s)

P1050306.JPG



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Don Lum




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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:  22219 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:  22259 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:  22266 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:  22189 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:  22194 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:  22101 Time(s)

P1050465.JPG



P1050475.JPG
 Description:
Rhodochrosite
Uchucchacua Mine, Oyon Province, Lima Department, Peru
10 x 9.5 x 6.9 cm
 Viewed:  22135 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:  22107 Time(s)

P1050493.JPG



P1050498.JPG
 Description:
Rhodochrosite
Uchucchacua Mine, Oyon Province, Lima Department, Peru
10 x 9.5 x 6.9 cm
 Viewed:  22106 Time(s)

P1050498.JPG



P1050501.JPG
 Description:
Rhodochrosite
Uchucchacua Mine, Oyon Province, Lima Department, Peru
10 x 9.5 x 6.9 cm
 Viewed:  22057 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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