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A mineralogical trip through Germany / Thueringen - Thuringia
  
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Tobi




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PostPosted: Jan 16, 2014 09:09    Post subject: A mineralogical trip through Germany / Thueringen - Thuringia  

The land in the middle of Germany mainly consists of mountain and hill ranges and thus is a mineral-rich region, though it does not have that many classics for collectors. The most important localities are in the north where Thuringia borders the Harz Mountains.


Fluorite - Caaschwitz_Gera_Thuringia_Germany.JPG
 Description:
Fluorite
Caaschwitz, Gera, Thuringia, Germany
4,5 x 2,5 cm
Collection & Photo: Tobias Martin
 Viewed:  10527 Time(s)

Fluorite - Caaschwitz_Gera_Thuringia_Germany.JPG


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Ed Huskinson




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PostPosted: Jan 16, 2014 15:53    Post subject: Re: A mineralogical trip through Germany / Thueringen - Thuringia  

Gee whiz, this looks so much like the fluorites from the Blanchard Mine, Bingham, New Mexico.
.
Must be a similar geologic setting. Quite remarkable!

Keep posting!

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La respuesta está en las rocas!! Estudiadlas!!
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Andreas Gerstenberg




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PostPosted: Jan 17, 2014 06:32    Post subject: Re: A mineralogical trip through Germany / Thueringen - Thuringia  

A range of Thuringian specimens from my collection:


Malachit (Ullersreuth).jpg
 Description:
Malachite
Arme Hilfe mine, Ullersreuth, Vogtland, Thuringia, Germany
9 x 6 cm
 Viewed:  10346 Time(s)

Malachit (Ullersreuth).jpg



Azurit (Saalfeld).JPG
 Description:
Azurite, malachite
Kronprinz mine, Kamsdorf, Thuringia, Germany
6 x 4 cm
 Viewed:  10440 Time(s)

Azurit (Saalfeld).JPG



Pyrolusit (Öhrenstock).JPG
 Description:
Pyrolusite
Luthersteufe mine, Öhrenstock, Thuringia, Germany
14,5 x 11 cm
 Viewed:  10308 Time(s)

Pyrolusit (Öhrenstock).JPG



Mellit (Artern).jpg
 Description:
Mellite
Auguste coal mine, Artern, Thuringia, Germany
1,5 x 1 cm
Type locality.
 Viewed:  10343 Time(s)

Mellit (Artern).jpg



Fluorit (Friedrichroda).jpg
 Description:
Fluorite, hematite, quartz
Seebachfelsen, Friedrichroda, Thuringia, Germany
5 x 4 cm
 Viewed:  10311 Time(s)

Fluorit (Friedrichroda).jpg


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Tobi




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PostPosted: Mar 30, 2014 09:55    Post subject: Re: A mineralogical trip through Germany / Thueringen - Thuringia  

Ed Huskinson wrote:
Gee whiz, this [fluorite from Caaschwitz, Thuringia] looks so much like the fluorites from the Blanchard Mine, Bingham, New Mexico. Must be a similar geologic setting. Quite remarkable! Keep posting!

Hi Ed, I somehow forgot your post until I browsed this thread again today.

They actually are different from the Blanchard specimens: The Caaschwitz fluorites are rather purple and never sky-blue. And they are all quite small while the Blanchard Mine produced larger cubes. However, I can fulfill your wish of more postings with a close-up of the Caaschwitz fluorite specimen :-)

Cheers!
Tobi



CaaschwitzDETAIL.JPG
 Description:
Fluorite
Caaschwitz, Gera, Thuringia, Germany
FOV 2 cm
 Viewed:  10083 Time(s)

CaaschwitzDETAIL.JPG


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GneissWare




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PostPosted: Mar 30, 2014 16:29    Post subject: Re: A mineralogical trip through Germany / Thueringen - Thuringia  

Is the color stable in sunlight? Blanchard fluorite will fade from blue to clear, and remain that way.
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Tobi




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PostPosted: Mar 31, 2014 01:03    Post subject: Re: A mineralogical trip through Germany / Thueringen - Thuringia  

GneissWare wrote:
Is the color stable in sunlight? Blanchard fluorite will fade from blue to clear, and remain that way.

Good question, I don't know. I have the Caaschwitz specimen for one and a half years now, and it has not changed. But I also have a blue Blanchard Mine specimen for the same time and it has not changed, either ... maybe such fading processes take quite long (I hope so) ...?

Tobi
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Andreas Gerstenberg




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PostPosted: Mar 31, 2014 04:46    Post subject: Re: A mineralogical trip through Germany / Thueringen - Thuringia  

Hi,

The Caaschwitz fluorites are rather stable in their colour (however, you shouldn´t put them in direct sunlight...), not as, for example, the blue crystals from Halsbrücke/Saxony.

Cheers
Andreas
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Jordi Fabre
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PostPosted: Apr 04, 2014 15:02    Post subject: A mineralogical trip through Germany / Thueringen - Thuringia / Hydroboracite  

A "modern classic"


Hydroboracite - Kohnstein Quarry_Niedersachswerfen_Nordhausen_Harz_Thuringia_Germany.jpg
 Description:
Hydroboracite
Kohnstein Quarry, Niedersachswerfen, Nordhausen, Harz, Thuringia, Germany
Main crystal size: 3 × 0.7 cm
Photo: Reference Specimens
 Viewed:  9779 Time(s)

Hydroboracite - Kohnstein Quarry_Niedersachswerfen_Nordhausen_Harz_Thuringia_Germany.jpg


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PostPosted: Aug 19, 2014 08:41    Post subject: Re: A mineralogical trip through Germany / Thueringen - Thuringia  

The Ronneburg uranium mining district is known for excellent mineral specimens such as variscite, wavellite, whewellite, gypsum and varíous systematic rarities. Here´s an old variscite/wavellite combo found in 1970:


Variscit (Ronneburg).jpg
 Description:
Variscite, wavellite
Lichtenberg open cast, Ronneburg, Thuringia, Germany
7,5 x 5 cm
 Viewed:  8841 Time(s)

Variscit (Ronneburg).jpg


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Tobi




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PostPosted: Feb 16, 2015 13:11    Post subject: Re: A mineralogical trip through Germany / Thueringen - Thuringia  

Not my taste, but I know many collectors consider this a holy grail of German minerals:


IMG_3459.JPG
 Mineral: Manganite
 Locality:
Ilfeld, Nordhausen, Harz, Thuringia/Thüringen, Germany
 Dimensions: Specimen size 18 cm
 Description:
Collection: GeoMuseum TU Clausthal (my photo)
 Viewed:  8094 Time(s)

IMG_3459.JPG


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Andreas Gerstenberg




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PostPosted: Feb 17, 2015 08:59    Post subject: Re: A mineralogical trip through Germany / Thueringen - Thuringia  

Like the Pöhla barytes. Nice pieces but fairly overrated.


Manganit (Ilfeld).jpg
 Mineral: Manganite
 Locality:
Ilfeld, Nordhausen, Harz, Thuringia/Thüringen, Germany
 Dimensions: Specimen size 7,5 cm
 Description:
 Viewed:  8054 Time(s)

Manganit (Ilfeld).jpg


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Andreas Gerstenberg




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PostPosted: Jul 17, 2015 13:16    Post subject: Re: A mineralogical trip through Germany / Thueringen - Thuringia  

Another Thuringian Fluorite:


Fluorit (Stahlberg).jpg
 Mineral: Fluorite, baryte
 Locality:
Stahlberg Mine, Trusetal, Floh-Seligenthal, Thüringer Wald (Thuringian Forest), Thuringia/Thüringen, Germany
 Dimensions: 5 x 4 cm
 Description:
 Viewed:  7082 Time(s)

Fluorit (Stahlberg).jpg


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PostPosted: Dec 08, 2015 09:38    Post subject: Re: A mineralogical trip through Germany / Thueringen - Thuringia  

Since Jordi picked up all that stuff it´s so hard to get a more or less satisfying strontioginorite specimen here in Germany...


Strontioginorit (Niedersachswerfen).jpg
 Mineral: Strontioginorite
 Locality:
Kohnstein Quarry, Niedersachswerfen, Nordhausen, Harz, Thuringia/Thüringen, Germany
 Dimensions: Picture width: 10 cm, crystals up to 3 cm, total specimen 16 x 13 cm
 Description:
 Viewed:  6238 Time(s)

Strontioginorit (Niedersachswerfen).jpg


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PostPosted: Jan 11, 2016 14:27    Post subject: Re: A mineralogical trip through Germany / Thueringen - Thuringia  

Cute tiny plate of wavellite:


IMG_1102.JPG
 Mineral: Wavellite
 Locality:
Lichtenberg open cast, Ronneburg U deposit, Gera, Thuringia/Thüringen, Germany
 Dimensions: Specimen size ~ 50-60 cm
 Description:
Collection Terra Mineralia, Freiberg (my photo)
 Viewed:  5713 Time(s)

IMG_1102.JPG


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PostPosted: Apr 13, 2016 11:44    Post subject: Re: A mineralogical trip through Germany / Thueringen - Thuringia  

Another tiny specimen from Thuringia ;-)


IMG_1101.JPG
 Mineral: Gypsum on Halite
 Locality:
Bleicherode, Nordhausen, Thuringia/Thüringen, Germany
 Dimensions: Specimen size 45 cm
 Description:
Collection Terra Mineralia, Freiberg (my photo)
 Viewed:  4758 Time(s)

IMG_1101.JPG


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PostPosted: Apr 25, 2016 09:32    Post subject: Re: A mineralogical trip through Germany / Thueringen - Thuringia  

Gold from Thuringia:


Gold (Schmiedefeld).jpg
 Mineral: Gold, Pyrite, Arsenopyrite, Chamosite
 Locality:
Schmiedefeld, Saalfeld, Saalfeld-Rudolstadt, Thuringia/Thüringen, Germany
 Dimensions: 5 x 3,5 cm
 Description:
 Viewed:  4551 Time(s)

Gold (Schmiedefeld).jpg


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PostPosted: May 06, 2016 04:06    Post subject: Re: A mineralogical trip through Germany / Thueringen - Thuringia  

In the late 1960s and 1970s the Henneberg quarry near Weitisberga was a famous locality for beryl aggregates in granite. The radial crystals reached 10 cm and more.


Beryll (Henneberg).jpg
 Mineral: Beryl
 Locality:
Henneberg Quarry, Weitisberga, Wurzbach, Saale-Orla-Kreis, Thuringia/Thüringen, Germany
 Dimensions: Picture width 19 cm
 Description:
 Viewed:  4389 Time(s)

Beryll (Henneberg).jpg


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PostPosted: Jan 18, 2017 12:54    Post subject: Re: A mineralogical trip through Germany / Thueringen - Thuringia  

A calcite find from the early 1980s:


Calcit (Beulwitz).jpg
 Mineral: Calcite
 Locality:
Zechengrund, Beulwitz, Saalfeld, Saalfeld-Rudolstadt, Thuringia/Thüringen, Germany
 Dimensions: 9 x 7 cm
 Description:
Very similar to the popular calcites from Kamsdorf, which is also in the Saalfeld mining district.
 Viewed:  2046 Time(s)

Calcit (Beulwitz).jpg


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PostPosted: May 10, 2017 02:55    Post subject: Re: A mineralogical trip through Germany / Thueringen - Thuringia  

What can we expect to find in Thuringia? : Manganite from Ilfeld. But also marvelous rarities from Köhnstein Quarry!


Manganite - Ilfeld_Nordhausen_Harz_Thuringia_Germany.jpg
 Mineral: Manganite (after Pyrolusite)
 Locality:
Ilfeld, Nordhausen, Harz, Thuringia/Thüringen, Germany
 Dimensions: Specimen size: 3.6 × 1.8 × 1.8 cm
 Description:
 Viewed:  856 Time(s)

Manganite - Ilfeld_Nordhausen_Harz_Thuringia_Germany.jpg



Hydroboracite - Kohnstein Quarry_Niedersachswerfen_Nordhausen_Harz_Thuringia_Germany.jpg
 Mineral: Hydroboracite
 Locality:
Kohnstein Quarry, Niedersachswerfen, Nordhausen, Harz, Thuringia/Thüringen, Germany
 Description:
Specimen size: 3.2 × 1.4 × 0.5 cm
 Viewed:  853 Time(s)

Hydroboracite - Kohnstein Quarry_Niedersachswerfen_Nordhausen_Harz_Thuringia_Germany.jpg



Hydroboracite - Kohnstein Quarry_Niedersachswerfen_Nordhausen_Harz_Thuringia_Germany_D.jpg
 Mineral: Hydroboracite
 Locality:
Kohnstein Quarry, Niedersachswerfen, Nordhausen, Harz, Thuringia/Thüringen, Germany
 Dimensions: Main crystal size: 3 × 0.7 cm
 Description:
 Viewed:  855 Time(s)

Hydroboracite - Kohnstein Quarry_Niedersachswerfen_Nordhausen_Harz_Thuringia_Germany_D.jpg



Strontioginorite - Kohnstein Quarry_Niedersachswerfen_Nordhausen_Harz_Thuringia_Germany.jpg
 Mineral: Strontioginorite
 Locality:
Kohnstein Quarry, Niedersachswerfen, Nordhausen, Harz, Thuringia/Thüringen, Germany
 Description:
Main crystal size: 1.5 × 0.2 cm
 Viewed:  855 Time(s)

Strontioginorite - Kohnstein Quarry_Niedersachswerfen_Nordhausen_Harz_Thuringia_Germany.jpg


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