Anna mine, Alsdorf, Aachen, Cologne, North Rhine-Westphalia, Germany
Red crystals of kremersite FOV 1,5 mm Gift from Frank de Wit !! Collection and Photo : Vincent Bourgoin
© Vincent Bourgoin
Sony Nex 7, bellows, Mitutoyo M Plan 20 x, aperture, Raynox DCR 250 retro, THK linear actor, stack shot control
© Stephan Wolfsried 1/2015
FOV ca.1.5mm
© Frank de Wit
Field of view: 1.0mm Collected by and received from Frank de Wit. Thanks! Collection and photo: Marko Burkhardt
© Marko Burkhardt
Carsten Slotta/mintreasure.com specimen, photo Joachim Esche modified Wild M420 photomacroscope with apozoom and Canon EOS 550D analyzed specimen, ex H. Geuer collection
© jo-esche 2018
Very nice colorless sprays of Thermessaite-(NH4). Canon EOS M6 Mark II, Bellows, CZJ 8x/0.20, Stackmaster, Helicon Focus Stacked from 65 images. Method=B (R=8,S=4)
© Elmar Lackner 2021
Picture width is 4mm. Black metallic crystals of Selenium formed on a burning coal dump. Depth of field is achieved with CombineZM.
© Elmar Lackner 2007
Field of view: 1.0mm Collected by and obtained from Gerhard Moehn. Thanks! Collection and photo: Marko Burkhardt
Picture width is 2,5mm. Yellow-orange crystals of Clairite. Mineral is formed on a burning coal dump ! Depth of field is achieved with CombineZM.
© Elmar Lackner 2006
Analysed by Uwe Kolitsch (crystal-structure refinement) (FOV: 1 mm)
Picture width 5 mm. Collection and photograph Stephan Wolfsried
© Stephan Wolfsried 6/2006
Size of crystal group ca. 0.8 mm. Collected by Frank de Wit; now collection Robert Simonoff.
photo&collection: Frank de Wit (width=2mm)
Picture width 6 mm. Collection and photograph Stephan Wolfsried
© Stephan Wolfsried 2006
Picture width is 5mm; yellow clusters of Ammoniojarosite.
Colourless pseudohexagonal crystals of sassolite. Picture size 2.5 mm. Photographer and collection Thomas Witzke.
© Thomas Witzke and Abraxas-Verlag
White boussingaultite. Picture size 5 mm. Photographer and collection Thomas Witzke.
Yellow metavoltine with colourless alunogen. Picture size 5 mm. Photographer and collection Thomas Witzke.
White rostite. Picture size 5 mm. Photographer and collection Thomas Witzke.
prismatic gray metallic crystals of selenium up to 1.21 mm Photo Matteo Chinellato Collection Domenico Preite
© Matteo Chinellato
About 1cm red selenian sulphur next to plain sulphur
© Maurice de Graaf
photo&collection: Frank de Wit (width=10mm)
photo&collection: Frank de Wit (width=4mm) the white 'lightbulb' might be Sal Ammoniac
Small greenish-black crystals of Voltaite with white Alunogen. Picture size 3 mm. Photographer and collection Thomas Witzke.
Orange crystals of kremersite. Picture size 1.5 mm. Photographer and collection Thomas Witzke.
Brown crystals of clairite on rostite. Picture size 5 mm. Photographer and collection Thomas Witzke.
The specimen is about 5 cm high Displayed mineral is a mixture of millosevichite-godovikovite (analyses Thomas Witzke from the same locality) The pictures is shot 'in situ' just after opening the pocket. The temperature in the pocket was about 156 degrees Celsium.
native selenium, fov 1mm nikon u20
© Joy Desor
Picture width is 6mm; platy crystals of Ravatite.
Small brown tabular to equant crystals of clairite on rostite. Picture size 0.8 mm. Photographer and collection Thomas Witzke.
Picture width is 4mm. White/colorless crystals of Ravatite (from the burning coal-dumps of the Mine).
Acicular crystals of native selenium. Picture size 8 mm. Photographer and collection Thomas Witzke.
Picture width 3 mm. Collection and photograph Stephan Wolfsried
© Stephan Wolfsried 2005
Probable "Rozenite" (not analyzed)on matrix with Selenium Field of view mm 6x4,5 Enrico Bonacina photo Fabio Brignoli collection (roccelllans)
© Enrico Bonacina
Analysed by Uwe Kolitsch (crystal-structure refinement) (FOV: 1.5 mm)
Picture width is 25mm. White masses of Tschermigite.
Photo made by Jean-Marc Johannet, now collection JoJM (FOV=1,5mm)
Colourless crystals of sassolite. Image width: 5 mm. Collection: Günter Blass. Photo: Fred Kruijen.
© Fred Kruijen
Photo of specimen shot 'in situ' ; the specimen is 'hand-width' covered with kremersite and unknown yellow phases. Temperature in the 'fumarole' was about 80 degrees celsium.
Specimens of millosevichite-godovikovite (mixture) just after finding them. Photo shot 'in situ'. Specimens about 5 cm long.
Grayish Ammonioalunite, 35mm by 25mm. Former Ewald Muller collection. Rolf Luetcke specimen and photo.
width : 5mm photo and collection :P Le Roch
© Pierre Le Roch
Cavity/fumarole with hanging specimens of millosevichite-godovichite (mixture). The temperature is just over 150 degrees celsium and the cavity is about 80 cm wide.
FOV=2.5mm ca.
Xls of Selenium. FOV 2x1.5mm
crystal is 1 mm ca. (tiny white fibres are UM) (Collected by Frank de Wit ; now collection Robert Simonoff)
(FOV 4mm)
1 cm area of yellow clairite on white probable tschermigite. S409-089 Gunnar Farber specimen.
© 2009, JGW
width=1mm
(FOV 5mm)
Photo made by Jean-Marc Johannet, now collection JoJM (FOV=3mm)
Analysed by Uwe Kolitsch (crystal-structure refinement) (FOV: 3 mm)
Needles of Unnamed (NH4-Fe-Na-Cl Sulphate) FOV 0,9 mm Obtained with JM Johannet Collection and Photo : Vincent Bourgoin
Colourless crystals of sassolite. Image width: 4 mm. Collection: Günter Blass. Photo: Fred Kruijen.
Black crystal of selenium (size 1 mm).P hoto & collection Paolo Grosso
© paolo grosso
FOV ca.2mm
xlgroup = ca.0,8mm (Collected by Frank de Wit ; now collection Robert Simonoff)
Picture width 2 mm. Collection and photograph Stephan Wolfsried
Selenium 0,5mm crystal photo & collection S.Broetto
Exellent glossy crystals of Selenium from the burning coal dumps. Picture width is 1,8mm.
© Elmar Lackner 2009
Black metallic crystals of Selenium formed on a burning coal dump. Picture width is 1,8mm.
Crystals of selenium FOV 2 mm Collection and Photo : Vincent Bourgoin
The two crystals grown together are 2 mm large. Found by Frank de Wit, now collection David Hospital.
Clear, colourless to purplish white crystals of ravatite from the burning dumps of the former Anna coalmine. Field of view 5 mm.
© Leon Hupperichs
size 0,3 mm
© Luigi Mattei
FOV=3mm ca.
Photo made by Jean-Marc Johannet, now collection JoJM (FOV=2mm)
(FOV 1mm) I like the heart-shaped twin...
(sorry for the bad picture ; was shot in 2005)
Photographed by Harald Schillhammer in 2013
© Harald Schillhammer