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Best Minerals - Baryte - Welcome

Posted by Rock Currier  
avatar Re: Best Minerals - Baryte
April 30, 2009 12:25PM
de    
Hello,

Remark on Baryte from Pöhla: The locality should be Pöhla Mine (Uranium mine), Luchsbach Valley, Pöhla, Schwarzenberg, Erzgebirge Mts., Saxony, Germany. It has produced some remarkable specimen of golden to honey-coloured (very similiar colours as the golden calcites from Malmberget/Sweden or Ruck's Pit, Florida/USA) up to 10 cm. These xls are always prismatic, the form is similiar to the form of the celestites from madagascar. They usually sit at grey, white to reddish (hematite inclusions) quartz xls (only a few mm typically), often the matrix is druzy or chert-like grey quartz. Fluorite cubes up to a few cm (usually honey yellow like the barytes) have been found in those areas of the veins, too, but I've never seen both minerals at one piece. Double terminated xls are not uncommon.

Good specimen with some undamaged (rare) or little damaged, cm sized xls are often sold for about 50 to 300 Euros, even in Germany.

The geology of the area is quite complex. It mostly consists of upper precambrian to lower cambrian metamorphites (graphite-bearing phyllites, garnet-bearing micashists) with layers of limestones (mostly marbles today). During variscean (or hercynian) orogeny (280-320 million years b.p.) two granite intrusions near the town of Schwarzenberg occurred as part of the widespread intrusions in the Erzgebirge Mts. The first one is synorogenic and strongly deformes (augen gneiss), the second postorogenic. In the area around Schwarzenberg the granite intrusions led to an intense metamorphic overprint on the shists and limestones, forming skarn and calcsilicate rocks, mostly consisting of clinopyroxene (Salite, an intermediate member of the diopside-hedenbergite series), actinolite, garnet (grossularite, andradite), vesuvianite, magnetite and sulphides (mostly sphalerite, chalkopyrite, partly galena, arsenopyrite, löllingite). Some skarns have larger amounts of scheelite (there have been rumors on exploration near Pöhla in 2008).

The mineralogy is quite complex due to complex geology.

In the area of interest, the Uranium mine in Luchsbach Valley, graphite bearing shists (phyllites) are the main hostrock of the veins. But there are also skarns with scheelite and magnetite (the latter being mined as iron ore). Garnet and actinolite are main skarn minerals here. Tin has been mined in the 1970'ies and 80'is in the same mine as the uranium, but other parts of the ore field. The tin ore has been cassiterite. Today the cavities (up to 20x20x40 m, I will look for exact size) are used sometimes for concerts. Parts of the mine are open to visitors (but no collecting underground is possible).
The main interest have been veins of the so-called BiCoNi-Formation (Bismuth-Cobalt-Nickel-Uranium-Silver formation), such as the Schildbach and Kunnersbach vein. Main mineral in the veins has been quartz, accompanied by fluorite and baryte. Siderite has been found, too, as well as hematite. As ore minerals Co-Ni-Arsenides (mostly Skutterudite/Ni-Skutterudite and Safflorite), uraninite, native bismuth and native arsenic, often with proustite, native silver (dentritic up to 20 cm!!), minor argentopyrite.

Regards,

Sebastian Möller
avatar Re: Best Minerals - Baryte
April 30, 2009 09:09PM
Sebastian,
Thats good information and I am sure that it will find its way into the article.

Rock Currier
Crystals not pistols.
avatar Re: Best Minerals - Baryte
May 04, 2009 04:09PM
de    
Good specimen with some undamaged (rare) or little damaged, cm sized xls are often sold for about 50 to 300 Euros, even in Germany.

What do you say about a 20 x 15 cm specimen with about 40 crystals up to 6 cm (very little damage) ?
(I'm allowed to take a photo of this specimen)
avatar Re: Best Minerals - Baryte
May 04, 2009 05:58PM
de    
Hello,

Peter: Probably worth at least several hundred Euros (800 or around), possibly about 1000. But prices can differ a lot. What I've seen, read and heard differs from 50 to several hundred euros, but one time I saw one bought for 15 Euros in the 90'ies. Unfortunately I haven't been fast enough.

Regards,
Sebastian Möller
Re: Best Minerals - Baryte - Welcome
December 21, 2009 06:18PM
Rock- for Canada, you might want to change the spelling of the province to British Columbia. Have a great Christmas!
avatar Re: Best Minerals - Baryte - Welcome
December 22, 2009 07:30AM
Raymond, Thanks, I think I got the one I found corrected. Did you see more than one of them not spelled correctly?

Rock Currier
Crystals not pistols.
avatar Re: Best Minerals - Baryte - Welcome
March 15, 2010 02:59AM
us    
Attached is a photo of a good barite from Force Crag, Coledale area, near Braithwaite, Cumbria, from Linsey's mining activities in the 1980s, for consideration in Best Minerals. Bill Dameron
Attachments:
open | download - BariteENGCumbriaForceCrag2.jpg (86.8 KB)
avatar Re: Best Minerals - Baryte - Welcome
March 15, 2010 03:02AM
us    
Attached is an unusually good barite from Dry Gill, Caldbeck Fells, Cumbria, 5.5 cm with a few mimetite crystals, for consideration in Best Minerals. Bill Dameron
Attachments:
open | download - BariteENGCaldbeckMimetite2.jpg (192.1 KB)
avatar Re: Best Minerals - Baryte - Welcome
March 15, 2010 03:06AM
us    
Attached is a picture of a classic Cumbria barite, 4 cm crystal on matrix with dolomite, 6x7 cm overall. Frizington, Cumbria. For consideration in Best of Species. Bill Dameron
Attachments:
open | download - BariteENGCumbriaGoldDolomite5.jpg (152.8 KB)
avatar Re: Best Minerals - Baryte - Welcome
March 15, 2010 03:10AM
us    
Attached is a picture of a Barite from Egremont, Cumbria, England on hematite, making it somewhat unusual. Could be Florence mine but no way to really know. 3.5 cm doubly terminated somewhat blue crystals on kidney ore. Bill Dameron. For inclusion in Best of Species.
Attachments:
open | download - BariteENGCumbriaHematite-b.jpg (257.1 KB)
avatar Re: Best Minerals - Baryte - Welcome
March 15, 2010 03:10AM
us    
Attached is a picture of a Barite from Egremont, Cumbria, England on hematite, making it somewhat unusual. Could be Florence mine but no way to really know. 3.5 cm doubly terminated somewhat blue crystals on kidney ore. Bill Dameron. For inclusion in Best of Species.
Attachments:
open | download - BariteENGCumbriaHematite-b.jpg (257.1 KB)
avatar Re: Best Minerals - Baryte - Welcome
March 15, 2010 03:13AM
us    
Attached is a picture of a barite from Frizington, Cumbria, England, 8.5x6.5x2 cm, a nice near-floater, very clear and blue. For consideration to add to best of species. Bill Dameron
Attachments:
open | download - BariteENGFriz2-a-2.jpg (253.5 KB)
avatar Re: Best Minerals - Baryte - Welcome
March 15, 2010 03:17AM
us    
Attached is a photo of a classic Hilton mine barite, iron staining deliberately left on, from Hilton mine, Scoredale, Cumbria. Barite is 4 cm, specimen overall is 5.7 cm. Associated are small clear fluorite cubes with yellow centers. For inclusion in Best of Species. Bill Dameron
Attachments:
open | download - BariteENGHilton.jpg (446.6 KB)
avatar Re: Best Minerals - Baryte - Welcome
March 15, 2010 03:20AM
us    
p.s. The Force Crag barite has crystals to 3.5 cm, and the specimen is 6x4 cm overall. Nice gloss also. Bill Dameron.

Bill Dameron
Re: Best Minerals - Baryte - Welcome
March 15, 2010 08:29PM
de    
I add two pictures. One is a Baryte of Poehla. Width of the specime is 7 cm. The second is a Baryte of Freiberg, Mine "Beihilfe". The Barytes of this locations are classics. The width of the shown specime is 15 cm.

Uwe Ludwig
Attachments:
open | download - Baryt-Pöhla.JPG (509.5 KB)
open | download - Baryt-Beihilfe .JPG (496.6 KB)
avatar Re: Best Minerals - Baryte - Welcome
March 16, 2010 01:15PM
Thanks for the nice pictures. I would be glad to use most of those barite images in the Best minerals section, but they must first be uploaded officially to the mindat website and not just sent as attachments to a mindat thread. Let me know when this gets done.

Rock Currier
Crystals not pistols.
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