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A mineralogical trip through Germany / Rest of Germany
  
  Index -> A mineralogical trip through Germany
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Tobi




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PostPosted: Jan 16, 2014 11:41    Post subject: A mineralogical trip through Germany / Rest of Germany  

The regions of Germany that do not have their own thread are located in the north and northeast of the country. Those coastal areas have no importance for mining or mineral collecting because their geologic formation shows only a few small mineral deposits worth mentioning. There are some exceptions, e.g. the chrysocolla finds of Helgoland Island in the North Sea, but they are so few that they all can be summarized in one thread.





Chrysocolla - Helgoland Island_Schleswig-Holstein_Germany.jpg
 Description:
Chrysocolla
Helgoland Island (North Sea), Schleswig-Holstein, Germany
fov 6 mm
Collection and photo: Andreas Gerstenberg
 Viewed:  13639 Time(s)

Chrysocolla - Helgoland Island_Schleswig-Holstein_Germany.jpg


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Andreas Gerstenberg




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PostPosted: Jan 17, 2014 06:10    Post subject: Re: A mineralogical trip through Germany / Rest of Germany  

There are more minerals from Helgoland that should be mentioned, f.e. excellent cuprite xls in vugs up to 6 cm, the best German connelites forming deep blue veins of needles in the sandstone matrix.

In Brandenburg, in the mid-northeastern part of Germany the celestine occurence in the Rüdersdorf limestone quarries is remarkable as well as the Bad Freienwalde gypsums (but more of a regional importance).

In Schleswig-Holstein there is an outcrop of Permian copper shist near Hamburg: the Lieth clay pits and limestone quarry. Good fluorite crystals up to 5 cm were found here.

Further more the northern areas of Germany are known for amber. Large specimens up to 20 cm and more are known not only from the coastal areas but also from Berlin.

In the following i will show some specimens from the "rest of Germany":



Pyrit (Spandau).jpg
 Description:
Pyrite
Parey sand pit, Spandau, Berlin, Germany
10 x 7 cm
Found in 1967.
 Viewed:  13463 Time(s)

Pyrit (Spandau).jpg



Bernstein (Steglitz).JPG
 Description:
Amber
Thorwaldsenstraße, Steglitz, Berlin, Germany
5,2 x 2,6 cm
Found in the late 1970s during the construction of a house.
 Viewed:  13479 Time(s)

Bernstein (Steglitz).JPG



Coelestin rot (Rüdersdorf).jpg
 Description:
Celestine
Alvensleben quarry, Rüdersdorf, Brandenburg, Germany
Largest crystal: 2 cm
 Viewed:  13460 Time(s)

Coelestin rot (Rüdersdorf).jpg



Gips (Finsterwalde).jpg
 Description:
Gypsum
Finsterwalde, Lower Lusatia, Brandenburg, Germany
13,5 x 4,5 cm
 Viewed:  13485 Time(s)

Gips (Finsterwalde).jpg



Gipsspeer (Bad Freienwalde).JPG
 Description:
Gypsum
Hammerthal clay pit, Bad Freienwalde, Brandenburg, Germany
7 x 4,5 cm
 Viewed:  13486 Time(s)

Gipsspeer (Bad Freienwalde).JPG



Gips X (Bad Freienwalde).jpg
 Description:
Gypsum
Hammerthal clay pit, Bad Freienwalde, Brandenburg, Germany
8 x 5 cm
 Viewed:  13439 Time(s)

Gips X (Bad Freienwalde).jpg



Tannengips (Hammerthal).jpg
 Description:
Gypsum
Hammerthal clay pit, Bad Freienwalde, Brandenburg, Germany
10 x 5,5 cm
 Viewed:  13432 Time(s)

Tannengips (Hammerthal).jpg



Phosphorit (Friedland).jpg
 Description:
Phosphorite
Friedland clay pit, Neubrandenburg, Mecklenburg-West Pomerania, Germany
8 x 8 cm
 Viewed:  13583 Time(s)

Phosphorit (Friedland).jpg



Fluorit, grün (Lieth).JPG
 Description:
Fluorite
Lieth quarry, Elmshorn, Schleswig-Holstein, Germany
Picture width: 9 cm
 Viewed:  13407 Time(s)

Fluorit, grün (Lieth).JPG



Fluorit violett (Lieth).JPG
 Description:
Fluorite
Lieth quarry, Elmshorn, Schleswig-Holstein, Germany
1,2 cm crystal
 Viewed:  13475 Time(s)

Fluorit violett (Lieth).JPG



Halit (Lieth).jpg
 Description:
Halite
Fiscal salt drill, Lieth, Elmshorn, Schleswig-Holstein, Germany
8 x 6 cm
Found about 1870.
 Viewed:  13443 Time(s)

Halit (Lieth).jpg


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bugrock




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PostPosted: Jan 17, 2014 20:55    Post subject: Re: A mineralogical trip through Germany / Rest of Germany  

Hello Andreas,

Very interesting selection of minerals in these posts.

The color of the celestine seems unusual. Are the reddish shades in the crystals?
Are there inclusions?

Please continue posting.

George
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Andreas Gerstenberg




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PostPosted: Jan 19, 2014 10:12    Post subject: Re: A mineralogical trip through Germany / Rest of Germany  

Hi,

The reddish colour is due to micro inclusions of hematite. Most people associate Rüdersdorf with blue celestine crystals. In fact the blue crystals are much more infrequent than red ones. However, there were found also colourless and yellow crystals at Rüdersdorf. The shown one i collected myself in 2013.

Attached two more Rüdersdorf specimens, both self-collected too.

Best regards
Andreas



Coelestin blau (Rüdersdorf).jpg
 Description:
Celestine
Alvensleben quarry, Rüdersdorf, Brandenburg, Germany
9 x 5 cm
Such a deep blue colour is very rare at Rüdersdorf.
 Viewed:  13269 Time(s)

Coelestin blau (Rüdersdorf).jpg



Coelestin braun (Rüdersdorf).jpg
 Description:
Celestine
Alvensleben quarry, Rüdersdorf, Brandenburg, Germany
Largest crystal: 3 cm
 Viewed:  13230 Time(s)

Coelestin braun (Rüdersdorf).jpg


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Andreas Gerstenberg




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PostPosted: Jan 28, 2014 06:51    Post subject: Re: A mineralogical trip through Germany / Rest of Germany  

Two more specimens from Mecklenburg.

Even in Germany Mecklenburg-West Pomerania is not a Land that one would connect with minerals or mining. However, about 1910 there was a small salt mining district near Ludwigslust with salt shafts in Conow and Lübtheen. Today the shafts are gone, hardly discernible dumps are the only relics left. Minerals are extremely rare, known are anhydrite crystals, halite, sylvite and - allegedly - boracite. The picture shows pseudo-octahedral anhydrite crystals in glass vial from the Conow shaft.

The other picture shows a very odd specimen too. Azurite spheres with malachite sitting in a matrix that seems to be peat. I wasn´t able yet to find any literature dealing with that occurence and am not quite sure whether it´s a natural formation or not...



Azurit (Ueckermünde).jpg
 Description:
Azurite, malachite
Ueckermünde, Mecklenburg-West Pomerania, Germany
11 x 8 cm
 Viewed:  13222 Time(s)

Azurit (Ueckermünde).jpg



Anhydrit (Conow).jpg
 Description:
Anhydrite
Conow shaft, Ludwigslust, Mecklenburg-West Pomerania, Germany
4 - 6 mm crystals
 Viewed:  13288 Time(s)

Anhydrit (Conow).jpg


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Andreas Gerstenberg




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PostPosted: Aug 19, 2014 08:35    Post subject: Re: A mineralogical trip through Germany / Rest of Germany  

The area around Berlin is, as mentioned before, known as kind of a "mineral-free zone" (except Rüdersdorf, of course). Now i had the chance to get another specimen from here: an exceptionally large gypsum aggregate from an old coal mining district near Berlin. The coal occured in small veins in a clay and was mined until around 1915. There is scarse literature mentioning small gypsum crystals so i was surprised to see such a giant.


Gips (Petersdorf).jpg
 Description:
Gypsum
Rauen hills, Petersdorf, Fürstenwalde, Brandenburg, Germany
15 x 13 cm
 Viewed:  12403 Time(s)

Gips (Petersdorf).jpg


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Andreas Gerstenberg




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PostPosted: Apr 26, 2016 10:48    Post subject: Re: A mineralogical trip through Germany / Rest of Germany  

A rare and very old amber from Rüdersdorf:


Bernstein (Stienitzsee).jpg
 Mineral: Amber
 Locality:
Limestone quarries, Stienitzsee Lake, Rüdersdorf, Märkisch-Oderland, Brandenburg, Germany
 Dimensions: 4,5 x 4 cm
 Description:
Found in 1885.
 Viewed:  10464 Time(s)

Bernstein (Stienitzsee).jpg


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Andreas Gerstenberg




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PostPosted: Mar 26, 2018 11:15    Post subject: Re: A mineralogical trip through Germany / Rest of Germany  

An amber from Berlin:


bernstein postfenn.jpg
 Mineral: Amber
 Locality:
Postfenn Pit, Grunewald, Berlin, Germany
 Dimensions: 4 x 3,5 cm
 Description:
 Viewed:  7226 Time(s)

bernstein postfenn.jpg


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