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Collection of Tobi
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Tobi




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PostPosted: Nov 21, 2010 07:17    Post subject: Re: Collection of Tobias Martin  

Carles Millan wrote:
This is a remarkable specimen from Erongo. We are used to see splendid schorls from there but not well shaped colored elbaites. This one shows well defined edges, and is on matrix, which is rather rare in that locality. Just search Mindat database for 'elbaite' and 'Usakos' to see.


I'm glad you like the specimen, Carles, thanks!

I also was surprised to find such a large coloured elbaite specimen from the Erongo area. You're right that the Erongo Mountains are one of the world's best sources for schorls, but such large coloured elbaites are actually rare there and rather known from the pegmatites of Minas Gerais, California or Pakistan and Afghanistan. The more my Namibian collector's heart is happy with the specimen :-)

There are two more aspects that make that specimen interesting. I tried to capture them on photo:

First aspect is that the whole matrix block of the elbaite is one single double-terminated quartz of 14 cm (first picture). A bit weathered, partly broken and not perfectly grown, but i hope the shape of a double-terminated quartz becomes apparent in the picture.

The other aspect is that the greenish blue tourmaline has a red core that can be seen when the specimen is held against a light source (second picture). Not easy to make a picture, but i think the red colour inside is visible on the picture.

Cheers!



UsakosTURbackside.jpg
 Description:
Backside of the specimen. This perspective shows that the whole specimen is one large double-terminated quartz.
 Viewed:  27430 Time(s)

UsakosTURbackside.jpg



UsakosTURbacklight.jpg
 Description:
The main crystal (width 17 mm) held against a light source. The red colour of the inner crystal comes apparent. Compare this to the normal pictures taken in daylight where the crystals are simply greenish-blue (see my previous post).
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UsakosTURbacklight.jpg


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Tobi




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PostPosted: Nov 23, 2010 11:15    Post subject: Re: Collection of Tobias Martin  

Fluorite. Riemvasmaak, Northern Cape Province, South Africa. 45 x 30 x 35 mm.


Riemvasmaak.jpg
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Riemvasmaak.jpg


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PostPosted: Mar 29, 2011 05:30    Post subject: Re: Collection of Tobias Martin  

Hemimorphite. Santa Eulalia District, Chihuahua, Mexico. 63 x 35 x 25 mm.


Eula1.jpg
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Eula1.jpg



Eula2.jpg
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Eula2.jpg


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PostPosted: Mar 29, 2011 06:52    Post subject: Re: Collection of Tobias Martin  

Dioptase. Altyn-Tyube, Kazakhstan. 43 x 38 x 35 mm, largest crystals ~ 6 mm.


DioptaseKAZ.jpg
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DioptaseKAZ.jpg


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Carles Millan
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PostPosted: Mar 29, 2011 07:24    Post subject: Re: Collection of Tobias Martin  

Hi Tobias!

Nice to see you here again.
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PostPosted: Mar 30, 2011 08:39    Post subject: Re: Collection of Tobias Martin  

Thank you, Carles, and sorry for not being present here for a long time! However, next specimen:

Azurite. Tsumeb, Namibia. 45 x 50 x 30 mm.



AzuriteTSU.jpg
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AzuriteTSU.jpg


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PostPosted: Mar 30, 2011 08:53    Post subject: Re: Collection of Tobias Martin  

Single (smoky) quartz crystal coated with iron oxide (?). Mount Sinai, Sinai Peninsula, Egypt. 85 x 40 x 35 mm.


QuartzEGY.jpg
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PostPosted: Apr 08, 2011 07:06    Post subject: Re: Collection of Tobias Martin  

Cavansite. Wagholi quarry near Pune, Maharashtra, India. 40 x 25 x 30 mm, the cavansite "ball" in front measures exactly 1 cm.


cavansite_wagholi.JPG
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cavansite_wagholi.JPG


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PostPosted: Apr 08, 2011 07:20    Post subject: Re: Collection of Tobias Martin  

Calcite with duftite. Tsumeb Mine, Otjikoto Region, Namibia. 120 x 100 x 70 mm, largest crystal 42 mm.


Tsumeb_CAL01.JPG
 Description:
 Viewed:  26855 Time(s)

Tsumeb_CAL01.JPG



Tsumeb_CAL02.JPG
 Description:
 Viewed:  26857 Time(s)

Tsumeb_CAL02.JPG



Tsumeb_CAL03.JPG
 Description:
One of the smaller crystals (~ 15 mm) that shows how the duftite is intergrown with the calcite.
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Tsumeb_CAL03.JPG


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PostPosted: Apr 08, 2011 07:35    Post subject: Re: Collection of Tobias Martin  

Calcite. Elmwood Mine, Tennessee, USA. 100 x 90 x 50 mm, main crystal 50 mm.


Calcite_Elmwood01.JPG
 Description:
 Viewed:  26848 Time(s)

Calcite_Elmwood01.JPG



Calcite_Elmwood02.JPG
 Description:
 Viewed:  26839 Time(s)

Calcite_Elmwood02.JPG



Calcite_Elmwood03.JPG
 Description:
The main crystals on the upper side of the specimen.
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Calcite_Elmwood03.JPG


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PostPosted: Apr 10, 2011 16:02    Post subject: Re: Collection of Tobias Martin  

Vivianite. Kerch, Crimea peninsula, Ukraine. 70 x 55 x 20 mm.


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PostPosted: Apr 16, 2011 05:58    Post subject: Re: Collection of Tobias Martin  

Smithsonite. El Refugio Mine, Choix, Sinaloa, Mexico. 55 x 40 x 25 mm.


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PostPosted: Apr 16, 2011 07:22    Post subject: Re: Collection of Tobias Martin  

Carles Millan wrote:
This is a remarkable specimen from Erongo. We are used to see splendid schorls from there but not well shaped colored elbaites. This one shows well defined edges, and is on matrix, which is rather rare in that locality. Just search Mindat database for 'elbaite' and 'Usakos' to see.

Carles and Tobias

These are from other pegmatite deposits in the Erongo REGION but NOT Erongo Mountains! , although only some deka kilometers from Erongo, but different in all aspects.

There are great many pegmatites on the plains around Erongo Mountains, but still in the Erongo region. Many of these pegmatites are known just for colored tourmalines and have been mined extensively for them. There are many colors to large sizes and often on quartz! Red, green, blue and combinations. These deposits are real big mines! WHile in the Erongo Mountains, although soem very big diggings, each is withing one cavity! The formation is very different although there are some large veins also in the Erongo Mtns and close to.
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PostPosted: Apr 16, 2011 08:10    Post subject: Re: Collection of Tobias Martin  

Peter wrote:
Carles and Tobias

These are from other pegmatite deposits in the Erongo REGION but NOT Erongo Mountains! , although only some deka kilometers from Erongo, but different in all aspects.

Thanks Peter, but none of us referred to the Erongo Mountains as locality of the large elbaite. The specimen comes from a pegmatite mine near Usakos, 30 miles south of the Erongo Mountains.

Cheers!
Tobi
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PostPosted: Apr 16, 2011 13:01    Post subject: Re: Collection of Tobias Martin  

Yes Tobias
It just seemd as if you were confusing the deposits! I have been to booth the Erongo mountains and seen and dug some 30 pockets and to many of the larger pegmatites from Uis in the north to Usakos in the south. Namibia has produced some fabulous elbaites!
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PostPosted: Apr 17, 2011 09:42    Post subject: Re: Collection of Tobias Martin  

Just some impressions of my displayed collection (sorry that some pictures are fuzzy).


FluGER.JPG
 Description:
Classic German fluorites (1. Clara Mine, 2. Woelsendorf, 3. Freiberg).
 Viewed:  26496 Time(s)

FluGER.JPG



FluINT1.JPG
 Description:
Fluorites from Xianghuapu Mine and Elmwood Mine.
 Viewed:  26495 Time(s)

FluINT1.JPG



FluINT2.JPG
 Description:
Some other fluorites (Cave-In-Rock, Riemvasmaak and several Namibian localities) plus an invitation to a fluorite special exhibition.
 Viewed:  26489 Time(s)

FluINT2.JPG


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PostPosted: Apr 17, 2011 09:47    Post subject: Re: Collection of Tobias Martin  

--


GarINT.JPG
 Description:
Garnets from Afghan Kunar Valley and Austrian Oetz Valley.
 Viewed:  26521 Time(s)

GarINT.JPG



GalBUL.JPG
 Description:
A Bulgarian galena on quartz.
 Viewed:  26503 Time(s)

GalBUL.JPG



CalINT.JPG
 Description:
Calcites from Irai and German Juchem Quarry next to an article about my museum exhibition.
 Viewed:  26488 Time(s)

CalINT.JPG


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PostPosted: Apr 17, 2011 09:49    Post subject: Re: Collection of Tobias Martin  

--


CalNAM.JPG
 Description:
Even the new Tsumeb calcite has found its place.
 Viewed:  26471 Time(s)

CalNAM.JPG



CalBEL.JPG
 Description:
Yellow Calcite from Belgian La Sambre Quarry.
 Viewed:  26497 Time(s)

CalBEL.JPG



CalUSA.JPG
 Description:
U.S. calcites from Sweetwater Mine and Elmwood Mine.
 Viewed:  26510 Time(s)

CalUSA.JPG


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PostPosted: Apr 17, 2011 09:53    Post subject: Re: Collection of Tobias Martin  

--


TouINT1.JPG
 Description:
Elbaites from Minas Gerais (Urubu Mine and Pederneira Mine) next to the elbaite from Usakos/Namibia.
 Viewed:  26509 Time(s)

TouINT1.JPG



TouINT2.JPG
 Description:
Some other tourmalines from all over the world: Rubellite from Californian Stewart Mine, schorls from Pakistani Shigar Valley and Namibian Farm Erongorus.
 Viewed:  26480 Time(s)

TouINT2.JPG



BarINT.JPG
 Description:
Some Barytes from Germany, France and Morocco.
 Viewed:  26494 Time(s)

BarINT.JPG


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PostPosted: Apr 17, 2011 09:58    Post subject: Re: Collection of Tobias Martin  

--


ApaINT.JPG
 Description:
Fluorapatites in calcite matrix, one from Canadian Yates Mine and from Russian Lake Baikal.
 Viewed:  26483 Time(s)

ApaINT.JPG



QuaCHI.JPG
 Description:
Chinese quartzes (1. Jinlong Hill, 2. Lechang Mine, both Guangdong Province, 3 Jinkouhe/Sichuan Province).
 Viewed:  26480 Time(s)

QuaCHI.JPG



QuaINT.JPG
 Description:
Some other international quartes, smoky quartz from Egypt, rock crystal from Peru, amethyst from Namibia.
 Viewed:  26471 Time(s)

QuaINT.JPG


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