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Uwe Kolitsch's Photo Gallery

2H3-X73Goethite α-Fe3+O(OH) , Quartz SiO2

08691500015711326699580.jpg
Clara Mine, Oberwolfach, Ortenaukreis, Freiburg, Baden-Württemberg, Germany

Field of View: 7 mm

Black, sharp, approximately coffin-shaped goethite crystals on a crust of brownish felty goethite overgrowing quartz crystals (one crystal is visible at bottom).
FOV 7 mm.

Collection Natural History Museum (gift from Heinz Förch).
Photo Harald Schillhammer.
Copyright: © Harald Schillhammer      Photo ID: 1006302     Uploaded by: Uwe Kolitsch   View Count: 23   Approval status: Public galleries    Type: Photo - 1920 x 1278 pixels (2.5 Mpix)

C52-8WVPharmacosiderite KFe3+4(AsO4)3(OH)4·6-7H2O , Scorodite Fe3+AsO4·2H2O

Multiple photos available
00392750015711308894036.jpg
Beehive - German Reef, Maldon, Mount Alexander Shire, Victoria, Australia

Field of View: 3.2 mm

Greenish pharmacosiderite cubes associated with aggregates of small colourless scorodite crystals. The matrix is quartz. There is also minor gold on one of the specimens.
FOV 3.2 mm

Natural History Museum Vienna collection, cat. no. A.a. 4775 (three small specimens), catalogued in 1867 as "Würfelerz"; locality is given as "German Reef".
Photo Harald Schillhammer.
Copyright: © Harald Schillhammer      Photo ID: 1006300     Uploaded by: Uwe Kolitsch   View Count: 23   Approval status: Public galleries    Type: Photo - 1920 x 1311 pixels (2.5 Mpix)

UKL-L9LNováčekite-II Mg(UO2)2(AsO4)2·10H2O

Multiple photos available
09746530015637287286841.jpg
Mine No. 18, Paliokamariza Mines, Paliokamariza area, Lavrion District Mines, Lavreotiki, East Attica, Attica, Greece

SEM micrograph (BSE mode) of a cleavage fragment of a yellow, opaque Ca-bearing to -rich, SXRD-analysed nováčekite-II aggregate (originally embedded in gypsum). Note the faint dehydration cracks.

Collected in October 2018 from the "sklodowskite locality" (see https://www.mindat.org/article.php/2647/Uranium+minerals+from+the+Lavrion+Mining+District).
Copyright: © Uwe Kolitsch      Photo ID: 968225     Uploaded by: Uwe Kolitsch   View Count: 18   Approval status: Public galleries    Type: Photo - 2560 x 1920 pixels (4.9 Mpix)

47J-Y0YBeudantite PbFe3(AsO4)(SO4)(OH)6

Multiple photos available
06374240015637280827201.jpg
Adami No. 2 Mine & Others, Plaka Mines, Plaka, Lavrion District Mines, Lavreotiki, East Attica, Attica, Greece

SEM micrograph (BSE mode) of a blackish pseudo-cuboctahedral, S-rich beudantite crystal.
Smaller crystals on the specimen showed a dark brown-red colour.

From the carminite locality in Adami 2.
Gift from Branko Rieck.
Copyright: © Uwe Kolitsch      Photo ID: 968222     Uploaded by: Uwe Kolitsch   View Count: 6   Approval status: Public galleries    Type: Photo - 2560 x 1920 pixels (4.9 Mpix)

823-E0QChalcanthite CuSO4·5H2O

06320540015637277112285.jpg
Hilarion Mine, Hilarion area, Kamariza Mines, Agios Konstantinos [St Constantine], Lavrion District Mines, Lavreotiki, East Attica, Attica, Greece

SEM micrograph of a pale blue, chemically pure chalcanthite curl (dehydrated in the vacuum of the SEM chamber).

Sample from the hilarionite locality (level 3-4 in the Hilarion mine).
Copyright: © Uwe Kolitsch      Photo ID: 968221     Uploaded by: Uwe Kolitsch   View Count: 10   Approval status: Public galleries    Type: Photo - 2560 x 1920 pixels (4.9 Mpix)

DD4-0APNatrojarosite NaFe3(SO4)2(OH)6

Multiple photos available
07029690015637227098279.jpg
Sounion Mine No. 19, Sounion Mines, Sounion area, Lavrion District Mines, Lavreotiki, East Attica, Attica, Greece

SEM micrograph (BSE) of sharp, pseudohexagonal tabular natrojarosite crystals.
Representative sample of golden brown glittering masses several metres in size.
Copyright: © Uwe Kolitsch      Photo ID: 968200     Uploaded by: Uwe Kolitsch   View Count: 12   Approval status: Public galleries    Type: Photo - 2560 x 1920 pixels (4.9 Mpix)

N12-C1GNatrojarosite NaFe3(SO4)2(OH)6

Multiple photos available
02777050015637227108161.jpg
Sounion Mine No. 19, Sounion Mines, Sounion area, Lavrion District Mines, Lavreotiki, East Attica, Attica, Greece

SEM micrograph (BSE) of sharp, pseudohexagonal tabular natrojarosite crystals.
Representative sample of golden brown glittering masses several metres in size.
Copyright: © Uwe Kolitsch      Photo ID: 968198     Uploaded by: Uwe Kolitsch   View Count: 14   Approval status: Public galleries    Type: Photo - 2560 x 1920 pixels (4.9 Mpix)

XN0-NQ8Natrojarosite NaFe3(SO4)2(OH)6

Multiple photos available
06779110015637227106947.jpg
Sounion Mine No. 19, Sounion Mines, Sounion area, Lavrion District Mines, Lavreotiki, East Attica, Attica, Greece

SEM micrograph (BSE) of sharp, pseudohexagonal tabular natrojarosite crystals.
Representative sample of golden brown glittering masses several metres in size.
Copyright: © Uwe Kolitsch      Photo ID: 968196     Uploaded by: Uwe Kolitsch   View Count: 13   Approval status: Public galleries    Type: Photo - 2560 x 1920 pixels (4.9 Mpix)

GXW-D5DBeudantite PbFe3(AsO4)(SO4)(OH)6

01443890015637221438287.jpg
Shaft No. 132, Christiana Mine, Kamariza Mines, Agios Konstantinos [St Constantine], Lavrion District Mines, Lavreotiki, East Attica, Attica, Greece

SEM micograph (BSE mode) of pale yellow fine-grained "jarosite?" aggregates on limonite (coating quartz crystals) showed that these aggregates in fact consist of tiny platy beudantite crystals (with only traces of K and Na).
Note that the core of the platelets show a dark round area which is probably jarosite or natrojarosite (not analysed due to tinyness).
Copyright: © Uwe Kolitsch      Photo ID: 968190     Uploaded by: Uwe Kolitsch   View Count: 19   Approval status: Public galleries    Type: Photo - 2560 x 1920 pixels (4.9 Mpix)

AVQ-E99Natrojarosite NaFe3(SO4)2(OH)6

Multiple photos available
00276750015637213168695.jpg
Sounion Mine No. 6, Agia Varvara Mines, Sounion Area, Lavrion District Mines, Lavreotiki, East Attica, Attica, Greece

SEM micrograph (BSE mode) of tiny pseudo-octahedral natrojarosite crystals.

Collected in October 2018 from a weathered small ore vein (pyrite, galena, bournonite, famatinite, tetrahedrite-(Fe)/(Zn)) close to the surface.
Copyright: © Uwe Kolitsch      Photo ID: 968180     Uploaded by: Uwe Kolitsch   View Count: 15   Approval status: Public galleries    Type: Photo - 2560 x 1920 pixels (4.9 Mpix)
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