| View previous topic :: View next topic |
| Author |
Message |
Andreas Gerstenberg
Joined: 04 Mar 2010
Posts: 336
Location: Chemnitz
|
 Posted: Mar 05, 2010 05:59 Post subject: Re: Andreas Gerstenberg Collection |
|
|
They occur also at the border between the "Granulitgebirge" and the Freiberg mining district, Saxony. That´s where this specimen comes from: the Alte Augustus Stolln, Hasensprung near Rosswein. Samples like this (and from other localities like Schönborn-Dreiwerden too) are looked for and very rare. The cubes on this sample measure up to 1 cm and are accompanied with some baryte.
| Description: |
|
| Viewed: |
59326 Time(s) |
|
|
|
| Back to top |
|
 |
Andreas Gerstenberg
Joined: 04 Mar 2010
Posts: 336
Location: Chemnitz
|
| Posted: Mar 05, 2010 05:59 Post subject: Re: Andreas Gerstenberg Collection |
|
|
Here you have a really unusual locality: pale green cubes from the Lieth lime quarry, Elmshorn near Hamburg. This locality is the only outcrop of the Perm decade in northern Germany. Here copper shists are found laying over "Zechstein"-gypsum. In this copper shist you have sometimes fluorite cubes but good specimens are rare.
| Description: |
|
| Viewed: |
59288 Time(s) |
|
|
|
| Back to top |
|
|
Andreas Gerstenberg
Joined: 04 Mar 2010
Posts: 336
Location: Chemnitz
|
| Posted: Mar 05, 2010 06:09 Post subject: Re: Andreas Gerstenberg Collection |
|
|
And some more...
| Description: |
| This dolomite pseudo is definitely a favourite of mine. You know these pseudos after calcite scalenohedrons very well from the Schlema district, Erzgebirge, Saxony. But - this one is from Freiberg, precisely from the Abraham Shaft. It comes from a miner collection and was collected in the 1920s. It is the first one I ever saw from Freiberg and I think it will be the last... |
|
| Viewed: |
59308 Time(s) |
|
| Description: |
| Very similar to bismuthinite occurs emplectite from Altenberg. Here golden needles up to 2 cm with small pale bluish fluorite octahedrons and hematite in a vug from the Vereinigt Feld tin mine. |
|
| Viewed: |
59345 Time(s) |
|
| Description: |
| Not even frequent is bismuthinite from Altenberg, Erzgebirge, Saxony. The pic shows a 1 x 1 cm needle aggregate on fluorite and quartz from the Römer Shaft, dating from the 1950s. |
|
| Viewed: |
59320 Time(s) |
|
| Description: |
| Another good locality in Brandenburg are the claypits around Bad Freienwalde, some 80 km in the east of Berlin. There come very good gypsum samples, occuring in christmas tree-like aggregates up to 40 cm. From the northern claypit is this cute specimen with greenish calcite on lime stone. |
|
| Viewed: |
59297 Time(s) |
|
| Description: |
| Although Berlin and Brandenburg are not even blessed with mineral deposits we have... amber! At some places masses of them but deep in the ground;-) Sometimes they raise up to daylight like this classic specimen (about 7 cm in width) from the gravel pit at the Pinnower Bernsteinsee (amber lake, sic!) near Velten, Brandenburg. The old pit is today a lake where you can waterski... |
|
| Viewed: |
59286 Time(s) |
|
| Description: |
| Good dark orange baryte crystals on hematite from the Krunkelbach Uranium prospect, Menzenschwand, Black Forest. Sample 7 cm. |
|
| Viewed: |
59274 Time(s) |
|
| Description: |
| Silvery millerite sprays (up to 7 mm) from the Wehrendorf clay pit near Bad Essen, Westphalia. |
|
| Viewed: |
59314 Time(s) |
|
| Description: |
| A kind of my hobbyhorse are German precious stones like this clear quartz (2.5 ct) from the Ossling quarry near Hoyerswerda, Saxony. |
|
| Viewed: |
59293 Time(s) |
|
| Description: |
| Nice colorless baryte crystal (1,2 cm with hematite inclusions) on alterated dolomite from the Gehn quarry, Uffeln, Munsterland, Westphalia. |
|
| Viewed: |
59291 Time(s) |
|
| Description: |
| Bizarre gypsum aggregate (10 cm width) from Nietleben near Halle, Saxony-Anhalt. |
|
| Viewed: |
59288 Time(s) |
|
|
|
| Back to top |
|
|
Andreas Gerstenberg
Joined: 04 Mar 2010
Posts: 336
Location: Chemnitz
|
| Posted: Mar 05, 2010 06:14 Post subject: Re: Andreas Gerstenberg Collection |
|
|
...the next...
| Description: |
| A good sample with greenish brown sphalerite crystals and some quartz. Old find (7 cm) from Lautenthal, Harz. There you can find nice crystals even today. But the shown quality I never saw during my visits on the dumps, so I had to buy this nice oldtimer... |
|
| Viewed: |
59290 Time(s) |
|
| Description: |
| Germany is not very famous for its good turquoise specimens - but we do have them! The classic "turquoise-province" is the saxonian Voigtland. The shown sample comes from a small outcrop due to conduit workings near Altmannsgrün. The turqouise layer on this sample is 3 mm thick, sample width about 9 cm. |
|
| Viewed: |
59257 Time(s) |
|
| Description: |
| Nice schorl crystals (3,5 cm) with muscovite from the Papiermühle granite gravel pit near Selb, Fichtelgebirge, Bavaria. |
|
| Viewed: |
59220 Time(s) |
|
| Description: |
| Quartz crystals in front of a East Berlin winter sundowner... The crystals are up to 4 cm, they come from the Simon Bogners Neuwerk mine, Brand-Erbisdorf, Freiberg district, Erzgebirge, Saxony. There was found just one big vug full of good crystals which are sought-after by local collectors. |
|
| Viewed: |
59244 Time(s) |
|
| Description: |
| Blackish grey jordisite - a rare mo-sulfide from the Glückauf Shaft (type locality), Langenau, Freiberg district, Erzgebirge, Saxony. 6,5 cm sample. |
|
| Viewed: |
59362 Time(s) |
|
| Description: |
| Yet another type locality: 15 mm octahedron-like mellite crystal from the Auguste coal mine, Artern, Thuringia. This is where the best German mellites come from even if they cannot compete with the Hungarian crystals. |
|
| Viewed: |
59207 Time(s) |
|
| Description: |
| Nice yellow tetrahedrons of the rare beryllium silicate helvite from the type locality, Unverhofft Glück mine near Antonsthal, Erzgebirge, Saxony. Sitting with some diopsite and sphalerite on calcite. The largest tetrahedron measures a little more than 3 mm. |
|
| Viewed: |
59260 Time(s) |
|
| Description: |
| White gypsum needles on "fried" clay from the Basalt quarry Bauersberg near Bischofsheim, Rhön mountains, Bavaria. |
|
| Viewed: |
59300 Time(s) |
|
| Description: |
| Another mineral which is widespread in northern Germany is flintstone. Some collectors do not understand why to pick up that stuff... But if they are as pretty as the shown zebra-like stone from the Segeberg forest near Bad Segeberg, Schleswig-Holstein it is worth it, I would say. 10 cm sample from a 1975 find. |
|
| Viewed: |
59285 Time(s) |
|
| Description: |
| This 5 cm wide sample with corroded galenite crystals is from Freiberg too but not that old as the above shown dolomite. It comes from a little new find at the Rote Grube in the very "city center" of Freiberg. The find contained I think some ten specimens and the sample looks forward to become a classic rarity one day. |
|
| Viewed: |
59286 Time(s) |
|
|
|
| Back to top |
|
|
Andreas Gerstenberg
Joined: 04 Mar 2010
Posts: 336
Location: Chemnitz
|
| Posted: Mar 05, 2010 06:19 Post subject: Re: Andreas Gerstenberg Collection |
|
|
...more...
| Description: |
| Heidornite, a rare borate from the type locality, an oil drilling near Frenswegen, Nordhorn, Lower Saxony. Shown is a 4 mm crystalline aggregate coming up from 1968 m depth. Some of the rarest stuff you can get from Germany. |
|
| Viewed: |
59262 Time(s) |
|
| Description: |
| White picromerite crystals (up to 2,5 cm) on halite from the 800 m level, Bergmannssegen-Hugo potash mine, Lehrte near Hannover, Lower Saxony. |
|
| Viewed: |
59272 Time(s) |
|
| Description: |
| Pale green nodules of chrysocolla on calcite from Helgoland, Schleswig-Holstein. Picture width: 6 mm. |
|
| Viewed: |
59300 Time(s) |
|
| Description: |
| Little yellow sal ammoniac crystals on "fried" conglomerate from the Alstaden coal mine, Oberhausen, Westphalia. Here gorgeous sceleton-crystals up to 3,5 cm were found but till I will get such a killer I make do with the shown one... |
|
| Viewed: |
59304 Time(s) |
|
| Description: |
| About 3 cm measuring ulexite nodule (so-called "cotton ball") in massive anhydrite. Sample from the first place ulexite was found in Germany, the Niederellenbach quarry near Rothenburg, Hesse. From the collection of Sigmund Koritnig who described the mineral from Niederellenbach. |
|
| Viewed: |
59267 Time(s) |
|
| Description: |
| A classic locality for siderite is Lobenstein in Thuringia. This is where the shown oldtimer is from: dark brown crystals with some pyrite scattered on. |
|
| Viewed: |
59376 Time(s) |
|
| Description: |
| Siderite crystals are often found in siderite geodes in claypits. The - in my opinion - best examples were found in the claypit of Farmsen near Hildesheim, Lower Saxony. The pic shows a 9 cm wide sample with golden brown crystals. |
|
| Viewed: |
59601 Time(s) |
|
| Description: |
| A very rare pseudo: asbolane after calcite crystals on quartz from the Gott segne beständig mine, Spitzleithe, Schneeberg district, Erzgebirge, Saxony (type locality of lithiophorite!). The mine produced a lot of pseudo´s in the old days, even very unusual ones like manganese oxide after pyromorphite. They are mentioned in the famous mineralogical lexicon of the saxonian localities by August Frenzel (1874). The shown 5 cm wide specimen comes from the well-known Bally-Prior collection of Schönenwerd, Switzerland. |
|
| Viewed: |
59238 Time(s) |
|
| Description: |
| Phosphofibrite as concentric radials from the Wismut prospect near Röhrsdorf, Chemnitz, Saxony. Second find in Germany after Clara mine/Black Forest. |
|
| Viewed: |
59218 Time(s) |
|
| Description: |
| Collecting minerals is sometimes quite a funny thing. You find them where you don´t consider them to be. This gypsum comes from the Jordansprudel, a mineral spring near Bad Oeynhausen, Westphalia. The crystals sometimes really plug the water pipes... |
|
| Viewed: |
59272 Time(s) |
|
|
|
| Back to top |
|
|
Andreas Gerstenberg
Joined: 04 Mar 2010
Posts: 336
Location: Chemnitz
|
| Posted: Mar 05, 2010 06:25 Post subject: Re: Andreas Gerstenberg Collection |
|
|
That´s all folks. I hope, you enjoy viewing some specimens that are not shown that often. And if you want so, I can bother you with more;-) The photo quality is not the best but I hope it will be sufficient.
| Description: |
| 6 mm ferristrunzite spray from a very rare locality: Langes Tal (long valley) near Neustadt, Harz. |
|
| Viewed: |
59049 Time(s) |
|
| Description: |
| Fine colorless krausite needles from the Willi Agatz Shaft, Freital near Dresden, Saxony. Picture width: 4 mm. |
|
| Viewed: |
59033 Time(s) |
|
| Description: |
| Dark red ianthinite crystals, alterating to yellow schoepite as a 3 mm aggregate on quartz from the Krunkelbach Uranium prospect, Menzenschwand, Black Forest. |
|
| Viewed: |
59100 Time(s) |
|
| Description: |
| Something for the quartz collectors: orange chalcedony layered on quartz in form of dauphiné penetration twins from a new find at the Segen Gottes mine, Gersdorf, Freiberg district, Erzgebirge, Saxony. 7 cm in width. |
|
| Viewed: |
59044 Time(s) |
|
| Description: |
| Hollow crystals of pyromorphite on limonite from the Dorothea Landeskrone mine, Clausthal-Zellerfeld, Harz. |
|
| Viewed: |
59026 Time(s) |
|
| Description: |
| Pyromorphite crystal (2 mm) with a very intensive, "glowing" color. From the Giesenbach mine, Lahr, Black Forest. |
|
| Viewed: |
59010 Time(s) |
|
| Description: |
| Besides for the classic "astrolite"-mica Neumark in Voigtland, Saxony is well-known for calcite specimens like the shown up to 3 cm crystals covered with pyrite. |
|
| Viewed: |
59007 Time(s) |
|
| Description: |
| Pyrite in cuboctahedrons and tetrahedrons with calcite on ankerite. Old specimen from Kamsdorf in Thuringia. Picture width: 8 cm. |
|
| Viewed: |
59016 Time(s) |
|
| Description: |
| Nice polished pastel agate from the classic location Wendelsheim near Alzey, Rhineland-Palatinate. Sample 6 cm. |
|
| Viewed: |
59086 Time(s) |
|
| Description: |
| Kidney-like malachite filling in dolomite vug. Old specimen (about 1920) from Altenmittlau, Spessart, Hesse. The vug measures 4 cm in height. |
|
| Viewed: |
59009 Time(s) |
|
| Description: |
| Excellent Carneole with "craquelee"-structure and a fine fire-red color. Polished section, 6 cm in height from Grünewald, Niederlausitz, Brandenburg. |
|
| Viewed: |
59023 Time(s) |
|
| Description: |
| Dark brown sphalerite twin (1 cm) on dolomite and quartz. Found in the Aurora mine, Ramsbeck, Sauerland. |
|
| Viewed: |
59045 Time(s) |
|
|
|
| Back to top |
|
|
Antonio Alcaide
Site Admin
Joined: 23 Aug 2009
Posts: 314
Location: Spain
|
| Posted: Mar 05, 2010 15:02 Post subject: Re: Andreas Gerstenberg Collection |
|
|
Thanks, Andreas. Your systematic but also aesthetic collection is exhaustive. I have had a very good time watching it. Go on, please. Man does not live by "killer specimens" alone.
The best the labels and the history behind the pieces.
Cheers,
Antonio
_________________
Life is the shortest crystal |
|
| Back to top |
|
|
Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4248
Location: Germany
|
| Posted: Mar 06, 2010 04:36 Post subject: Re: Andreas Gerstenberg Collection |
|
|
I agree with Antonio. I know Andreas' style of collecting and specimens from his collection for several years now, and i really admire the accuracy with which he is devoted to historical specimens from German localites. And his care for old (sometimes REALLY old) labels make his collection a commendable mixture of both mineralogy and history.
So please go on, Andreas, and "bother" us with more ;-)
Glückauf!
|
|
| Back to top |
|
|
Matt_Zukowski
Site Admin
Joined: 10 Apr 2009
Posts: 737
Location: Alaska
|
| Posted: Mar 07, 2010 03:39 Post subject: Re: Andreas Gerstenberg Collection |
|
|
| I like the gypsum specimen.
|
|
| Back to top |
|
|
Andreas Gerstenberg
Joined: 04 Mar 2010
Posts: 336
Location: Chemnitz
|
| Posted: Mar 08, 2010 06:05 Post subject: Re: Andreas Gerstenberg Collection |
|
|
You want them, you´ll get them. Here´s the second package for you;-)
| Description: |
| A nice galena from Neudorf/Harz is hard to get, though. Nevertheless I´d say that getting a good fluorite from there is even harder. I bought this specimen with the declaration "Schönbrunn, Voigtland". But in fact it is an old classic from Neudorf with typical siderite and quartz crystals on the pale blue cubes as well as some sphalerite and galena in the shist matrix. Former collection of Bergdirector Geipel/Eisleben, dating from 1921 (without label, unfortunately). The cubes measure up to 2,5 cm. |
|
| Viewed: |
58765 Time(s) |
|
| Description: |
| Where do good vivianites come from? Trepca, yes. Bolivia, yes. Germany... Germany? Yes!! There is a locality in Bavaria, the Bayerland mine near Waldsassen, Fichtelgebirge. This mine gave crystals up to 10 cm in pyrrhotite. Normally the bigger ones (5 cm and more) are rather irregular but this one (more than 9 cm!) isn´t. I would say it´s the best piece of my collection! |
|
| Viewed: |
58696 Time(s) |
|
| Description: |
| A detail of the vivianite crystal |
|
| Viewed: |
58664 Time(s) |
|
| Description: |
| Anthophyllite asbestos from the Kuhlenberg quarry, Silbach, Sauerland, Westphalia. About 8,5 cm in width. |
|
| Viewed: |
58727 Time(s) |
|
| Description: |
| If you like Sweet Home mine rhodochrosites you´ll smile at me if I tell you that this is a very good Saxonian rhodochrosite sample. About 6,5 cm consisting of tiny saddle-shaped rhombs. From Alte Hoffnung Gottes mine, Kleinvoigtsberg, Freiberg district, Erzgebirge, Saxony. Rhodochrosite for itself is not that rare in Freiberg, but crystals are. Kleinvoigtsberg and Rothenfurth developed the best ones. Today it´s very hard to find any, this one I got at the Freiberg show in 2009. With two old labels (dating from 1901) - "Dialogit" is an old German name for rhodochrosite (being in use until approx. 1920). |
|
| Viewed: |
58713 Time(s) |
|
| Description: |
|
| Viewed: |
58653 Time(s) |
|
| Description: |
|
| Viewed: |
58650 Time(s) |
|
| Description: |
| Another systematic killer: native selenium with Sulphur in vial (as old as the hills...) from the known selenium mineral locality Tilkerode, Harz (type locality of naumannite and eskebornite and - as some experts say - even clausthalite). The vial is about 5,5 cm in length. |
|
| Viewed: |
58692 Time(s) |
|
| Description: |
| Micromounting in the old days: little box with label, dating from 1875. |
|
| Viewed: |
58624 Time(s) |
|
| Description: |
| Opened, showing the little massive pyrargyrite sample (3 cm) from Gesegnete Bergmannshoffnung mine, Obergruna, Freiberg district, Erzgebirge, Saxony. |
|
| Viewed: |
58672 Time(s) |
|
| Description: |
| Pyrolusite pseudo after calcite scalenohedrons (covered with a thin hematite layer) from the Luthersteufe mine near Öhrenstock, Ilmenau, Thuringia. Classic sample, about 6,5 cm in height. Similar pseudos are known from the manganite locality Ilfeld, Harz or from the Westerwald, Rhineland-Palatinate. |
|
| Viewed: |
58626 Time(s) |
|
| Description: |
| The man who crafted this label really loved his collection... All laborious handmade, former Antonjewitsch collection/Berlin (about 1950). |
|
| Viewed: |
58696 Time(s) |
|
|
|
| Back to top |
|
|
Andreas Gerstenberg
Joined: 04 Mar 2010
Posts: 336
Location: Chemnitz
|
| Posted: Mar 08, 2010 06:14 Post subject: Re: Andreas Gerstenberg Collection |
|
|
...more...
| Description: |
| Grey silver sheets on reddish grey massive hornstein quartz. Very old sample (8 cm in width) from Johanngeorgenstadt, Erzgebirge, Saxony. The mining district of Johanngeorgenstadt is not as well-known as Freiberg or Schneeberg, mineral specimens from there are rare. Famous are the mimetites (type locality) but also good silver minerals were found (notwithstanding you don´t see them that often). With two old labels. |
|
| Viewed: |
63696 Time(s) |
|
| Description: |
| Original label from Ecole Impériale des Mines/Paris (about 1840). |
|
| Viewed: |
63673 Time(s) |
|
| Description: |
| The older label dates from about 1790 I would say. Translation of the text as follows: flaky native silver in grey hornstein quartz, Johanngeorgenstadt, Saxony. |
|
| Viewed: |
63677 Time(s) |
|
| Description: |
| Blue violet fluorite cubes on dolomite - a classic from Caaschwitz quarry, Gera, Thuringia. The cube aggregate measures about 3 cm in width. |
|
| Viewed: |
63679 Time(s) |
|
| Description: |
| A famous location for German barytes is Zobes, Voigtland, Saxony. That´s where these nice platy crystals (up to 2 cm) with marcasite covering on smoky quartz come from. Not as famous as Pöhla barytes but in my opinion the best Zobes pieces can compete with. |
|
| Viewed: |
63674 Time(s) |
|
| Description: |
| Very old sample with dark brown biotite crystal (4 cm) from Ormont, Eifel mountains, Rhineland-Palatinate. About 1930. |
|
| Viewed: |
63714 Time(s) |
|
| Description: |
| A real German classic are these erythrite sprays (approx. 2,5 cm in diamater) in quartz vugs from Daniel mine, Schneeberg, Erzgebirge, Saxony (type locality). |
|
| Viewed: |
63695 Time(s) |
|
| Description: |
| Original label of F. Krantz Mineralienkontor/Bonn (around 1910). |
|
| Viewed: |
63704 Time(s) |
|
| Description: |
| Radial pale blue anhydrite crystals in calcite vug in limestone. Found in Berchtesgaden, Allgäu, Bavaria (where the salt on nearly every German breakfast egg comes from...). Sample 9 cm. |
|
| Viewed: |
63670 Time(s) |
|
| Description: |
| Very old label (I´d say about 1790-1810). The translation of the text as follows: anhydrite. Salty cubic gypsum intergrown in massive limestone. From Berchtesgaden. |
|
| Viewed: |
63608 Time(s) |
|
| Description: |
| Type locality: 5 mm arseno-uranospathite on blackish quartz from the Krunkelbach Uranium prospect, Menzenschwand, Black Forest. |
|
| Viewed: |
63536 Time(s) |
|
|
|
| Back to top |
|
|
Andreas Gerstenberg
Joined: 04 Mar 2010
Posts: 336
Location: Chemnitz
|
| Posted: Mar 08, 2010 06:20 Post subject: Re: Andreas Gerstenberg Collection |
|
|
For the systematic lovers some German rarities:
| Description: |
| Yellowish massive villyaellenite on native arsenic from the 366 shaft, Aue-Alberoda, Erzgebirge, Saxony. Picture width 3 mm. |
|
| Viewed: |
63653 Time(s) |
|
| Description: |
| Phosphowalpurgine with zeunerite from Krönung mine, Annaberg district, Erzgebirge, Saxony. Picture width 3 mm. |
|
| Viewed: |
63647 Time(s) |
|
| Description: |
| Lesukite intergrown with gibbsite from Deutschland shaft, Oelsnitz, Zwickau, Saxony. Picture width 2 mm. |
|
| Viewed: |
63666 Time(s) |
|
| Description: |
| Yellow lazarenkoite on loellingite matrix from Bärenstein quarry, Bad Harzburg, Harz. Picture width 3 mm. |
|
| Viewed: |
63686 Time(s) |
|
| Description: |
| White latiumite from the Herzog Julius smelter, Astfeld, Harz. Picture width 4 mm. |
|
| Viewed: |
63667 Time(s) |
|
| Description: |
| Green johannite from the 240 m level, Pöhla, Erzgebirge, Saxony. Picture width 3 mm. |
|
| Viewed: |
63690 Time(s) |
|
| Description: |
| Clear fluellite crystals from Cornelia fieldspar mine, Hagendorf, Bavaria. Picture width 3 mm. |
|
| Viewed: |
63666 Time(s) |
|
| Description: |
| Pale blue dypingite balls from the Gottesbelohnung smelter, Hettstedt, Saxony-Anhalt. Picture width 4 mm. |
|
| Viewed: |
63689 Time(s) |
|
| Description: |
| Blue cyanotrichite with white chalkoalumite and green brochantite from St. Briccius mine, Annaberg district, Erzgebirge, Saxony. Picture width 5 mm. |
|
| Viewed: |
63721 Time(s) |
|
| Description: |
| Red brown beusite crystals from the Genna zinc smelter, Lethmate, Sauerland, Westphalia. Picture width 4 mm. |
|
| Viewed: |
63717 Time(s) |
|
| Description: |
| 1 mm belendorffite grain from Moschellandsberg, Rhineland-Palatinate (type locality). |
|
| Viewed: |
63662 Time(s) |
|
| Description: |
| Orange red alacranite crystals from Wilmsdorfer shaft, Possendorf near Dresden, Saxony. Picture width 2 mm. |
|
| Viewed: |
63683 Time(s) |
|
|
|
| Back to top |
|
|
Andreas Gerstenberg
Joined: 04 Mar 2010
Posts: 336
Location: Chemnitz
|
| Posted: Mar 08, 2010 06:34 Post subject: Re: Andreas Gerstenberg Collection |
|
|
...some more...
| Description: |
| Flat gypsum rose from the northern claypit, Bad Freienwalde, Brandenburg. 8,5 cm in diameter. |
|
| Viewed: |
63669 Time(s) |
|
| Description: |
| A christmas tree of gypsum - found at the Hammerthal (southern) claypit, Bad Freienwalde, Brandenburg. 6,5 cm high tree. |
|
| Viewed: |
63672 Time(s) |
|
| Description: |
| Little galena cubes (up to 6 mm) on sandstone matrix. From the Bleiberg quarry, Maubach, northern Eifel mountains, Westphalia. |
|
| Viewed: |
63587 Time(s) |
|
| Description: |
| Gypsum as a characteristic "Montmartre" twin from the Alter Stolberg quarry, Stempeda, Harz. About 10 cm in length. |
|
| Viewed: |
63650 Time(s) |
|
| Description: |
| A classic locality for wavellite is the Wachtelberg quarry, Langenstriegis, Freiberg district, Erzgebirge, Saxony. 5 cm high specimen. In this quarry grey, yellow, green and blue wavellites occured. A nearly black variety was named "Striegisan". |
|
| Viewed: |
63698 Time(s) |
|
| Description: |
| Self-collected marcasite aggregate (4 cm in diameter) in marl matrix. Found at the Kolenfeld marl pit, Wunstorf near Hannover, Lower Saxony. This piece has been some ray of hope at the end of a rainy trip (as I left the location I looked like a filthy pig;-)) around Hannover. The region is famous for the marcasite bearing marl. Supraregionally known are the localities Höver and Misburg with characteristic "Speerkies" crystals. The Kolenfeld marcasites are far less reputated. |
|
| Viewed: |
63619 Time(s) |
|
| Description: |
| A hardly unknown locality for barytes is the Piesberg sandstone quarry, Osnabrück, Lower Saxony. The picture shows white plates up to 1 cm on quartz layer in sandstone (a 2001 find). Even pale blue crystals have been found. However, the quarry is far more reputated among fossil collectors. |
|
| Viewed: |
63711 Time(s) |
|
| Description: |
| Orthoclase pseudo after leucite from Oberwiesenthal, Erzgebirge, Saxony. These pseudos are found in the border area between Oberwiesenthal and Loucna (CZ). |
|
| Viewed: |
63676 Time(s) |
|
| Description: |
| Berlin amber. The upper three from the left to the right: reddish brown sample from Postfenn gravel pit in Grunewald forest - very clear one (5,5 cm) from the tower block construction at Thorwaldsen street/Steglitz in the 1970s - small tumbler, having been found during the construction of the tube at Bayerischer Platz station/Schöneberg. The two in the middle: yellow opaque from Gatow (having been found during construction works at the army airport in 1985) - old find from Seddinberg gravel pit/Müggelheim. The two lower ones: small pebble from Parey gravel pit/Spandau - clear one from a building pit at the Wall street near Alexanderplatz. |
|
| Viewed: |
63660 Time(s) |
|
| Description: |
| Cut Pöhla Baryte (0,32 ct). A very unusual precious stone... |
|
| Viewed: |
63759 Time(s) |
|
| Description: |
| Polished smoky citrine, partly gemmy. From the gorgeous find by Rudolf Nestler in 1939/40 which developed three big crystals (40 cm each) and some small ones. The first of the three is now part of the Freiberg museum, the second of the one in Dresden and the third crystal has been split and cut - the shown pane is part of that very crystal... |
|
| Viewed: |
63622 Time(s) |
|
| Description: |
| German cut stones. From the left to the right: magnetite (3,1 ct) from Volkesfeld, Eifel mts. - sanidine (3,2 ct) from the same locality - amethyste (2,7 ct) from Seidelgrund, Wiesenbad, Erzgebirge, Saxony - topaz (1,9 ct) from Schneckenstein, Saxony - smoky quartz (23,6 ct) from Elzing quarry, Limbach, Saxony - opal from Eibenstock, Saxony which has been a well-known deposit for gemmy opals in the past. |
|
| Viewed: |
63569 Time(s) |
|
|
|
| Back to top |
|
|
Antonio Alcaide
Site Admin
Joined: 23 Aug 2009
Posts: 314
Location: Spain
|
| Posted: Mar 08, 2010 18:36 Post subject: Re: Andreas Gerstenberg Collection |
|
|
Thanks, Andreas, for the new pics.
A few comments:
1) I am absolutely delighted by german marcasites. The one you have posted is amazing: a cluster formed by complex crystals. I had heard about german marcasites - I have searched at mindat and asked here-. I managed to buy several excellent pieces from Czech Republic -Bily Dolina, a coal mine-. Polysinthetic twins.
2) I didn't know that the pseudos of feldspar after leucite could also be found in Germany, close to Loucna (Czech Rep.). I have a piece from this last locality as well -pseudos are by far bigger than other leucites-. Interesting.
3) What such a surprise. You have post a gypsum twin that is identical to my pieces -from Galera, Granada, Spain-. As a proof I am posting an example - but I think to have exactly the same crystal, that I will post tomorrow-. I love their whisky colour and transparency, although the piece of the pic has clay inclusions. Sorry for posting it here.
Mineral world is pretty small...
Cheers,
Antonio
| Description: |
| Gypsum (arrow-head twin). 7 x 5 cm. Galera, Granada, Spain |
|
| Viewed: |
63608 Time(s) |
|
_________________
Life is the shortest crystal |
|
| Back to top |
|
|
Andreas Gerstenberg
Joined: 04 Mar 2010
Posts: 336
Location: Chemnitz
|
| Posted: Mar 09, 2010 08:07 Post subject: Re: Andreas Gerstenberg Collection |
|
|
Hi Antonio,
yes it is... Looking forward to see the "spanish brother crystal" of my Stempeda gypsum. Meanwhile some new pictures.
Andreas
| Description: |
| Nice grey calcite crystal (3,5 cm) from Rabenstein lime mine (today the sight "Rabensteiner Felsendome"), Chemnitz, Saxony. The locality developed excellent calcite samples in the old days. Rabenstein calcites rank with the best Saxonian, may be even with the best German calcites. |
|
| Viewed: |
63500 Time(s) |
|
| Description: |
| With old label on the backside. |
|
| Viewed: |
63502 Time(s) |
|
| Description: |
| Massive bluish grey berthierite - a very rich oldtimer from Kuhschacht, Bräunsdorf (near the famous Neue Hoffnung Gottes mine), Freiberg district, Erzgebirge, Saxony. Sample 7 cm in width. |
|
| Viewed: |
63481 Time(s) |
|
| Description: |
| The old label on the backside. |
|
| Viewed: |
63545 Time(s) |
|
| Description: |
| Well-shaped arsenopyrite crystals occur from the Ratsbruch (quarry), Hartmannsdorf near Chemnitz, Saxony. The shown crystals measure about 2 cm each. |
|
| Viewed: |
63435 Time(s) |
|
| Description: |
| 6,5 cm long copper sheet, almost entirely replaced by tiny cuprite octahedrons and malachite. From Mina mine, Niedermarsberg, Sauerland, Westphalia. |
|
| Viewed: |
63436 Time(s) |
|
| Description: |
| Pyrite combinations (up to 1 cm) in chamosite ("thuringite") from Schwarze Crux mine, Schmiedefeld, Thuringia. With old label from F. Krantz Mineralienkontor (about 1930). |
|
| Viewed: |
63514 Time(s) |
|
| Description: |
|
| Viewed: |
63441 Time(s) |
|
| Description: |
| Orthoclase ("paradoxite") from the Wachtelberg quarry, Euba near Flöha, Saxony. With old label. The locality developed some of the best paradoxites as well as good quartz samples. |
|
| Viewed: |
63577 Time(s) |
|
| Description: |
|
| Viewed: |
63486 Time(s) |
|
| Description: |
| Old vial with rounded pyrope crystals ("Bohemian Garnet") from Zöblitz, Erzgebirge, Saxony, a famous pyrope locality. |
|
| Viewed: |
63484 Time(s) |
|
| Description: |
| Added Fritz Schell collection label (1948) with a nice slip of the pen: topaz from zöblitz (later corrected). |
|
| Viewed: |
63496 Time(s) |
|
|
|
| Back to top |
|
|
|
FAQ 
Register
Log in
Forgotten your password?
