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Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Frank de Wit's Photo Gallery

DeWit(ite)

01235520017057439613572.jpg
Jas Roux, La Chapelle-en-Valgaudemar, Gap, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France

De Wit with the freshly found type specimen of dewitite :)
Photo ID: 1175023     Uploaded by: Frank de Wit   Upload date: 2021-10-24   View Count: 257    Status: User gallery    Type: Photo - 4000×3000 (12.0 Mpix)

Giesse(nite)

04766760015357250553736.jpg
Turtschi, Giessen, Binn, Goms, Valais, Switzerland

For years now, I've been wanting to add "-nite" to the sign... ;)
Copyright: © Frank de Wit      Photo ID: 907214     Uploaded by: Frank de Wit   Upload date: 2018-08-31   View Count: 84    Status: Public galleries    Type: Photo - 2592×1936 (5.0 Mpix)

Dr. Ludger Krahn

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Dr. Ludger Krahn under a fluorite vein in the Grube Hohe Warte, Harz, Germany.

The mineral lukrahnite is named after Dr. Krahn.
Copyright: © Ludger Krahn      Photo ID: 905663     Uploaded by: Frank de Wit   Upload date: 2018-08-23   View Count: 290    Status: User gallery only    Type: Photo - 2632×3954 (10.4 Mpix)

8L8-99TUnnamed Organometallic Se Phase C, H, Se (?)

Multiple photos available
00635190014947643347894.jpg
Anna mine, Alsdorf, Aachen, Cologne, North Rhine-Westphalia, Germany

Field of View: 3 mm

(sorry for the bad picture ; was shot in 2005)
Copyright: © Frank de Wit      Photo ID: 745769     Uploaded by: Frank de Wit   Upload date: 2016-05-03   View Count: 286    Status: Public galleries    Type: Photo - 682×512 (0.3 Mpix)

J86-M0KUnnamed Organometallic Se Phase C, H, Se (?)

04171120014946356035570.jpg
Anna mine, Alsdorf, Aachen, Cologne, North Rhine-Westphalia, Germany

Field of View: 5 mm



Mindat.org Photo of the Day - 9th Jun 2016
Copyright: © Frank de Wit      Photo ID: 745768     Uploaded by: Frank de Wit   Upload date: 2016-05-03   View Count: 1204    Status: Public galleries    Type: Photo - 854×570 (0.5 Mpix)

TPH-55YUnnamed (NH4-Zn-Fe Chloride) (NH4)3(Zn,Fe)Cl5 , Kremersite (NH4,K)2[Fe3+Cl5(H2O)]

00495210014961161469973.jpg
Anna mine, Alsdorf, Aachen, Cologne, North Rhine-Westphalia, Germany

Field of View: 5 cm

"Unnamed (NH4-Zn-Fe Chloride)" (green crystals near red kremersite), etc, immediately after extracting it from a vent ("fumarole") on the smoldering coaldump of the Anna coalmine.
Photo ca.5 cm wide
Copyright: © Frank de Wit      Photo ID: 736827     Uploaded by: Frank de Wit   Upload date: 2016-03-14   View Count: 204    Status: Public galleries    Type: Photo - 4000×3000 (12.0 Mpix)

Kremersite specimen

05996200014950562296151.jpg
Anna mine, Alsdorf, Aachen, Cologne, North Rhine-Westphalia, Germany

Specimen with Kremersite, Unnamed (NH4-Zn-Fe Chloride),
Unnamed (NH4-Mn Chloride-Fluoride(?)-Hydrate), and
Unnamed (NH4-Mn Chloride-Hydrate),
immediately after extracting it from a vent ("fumarole") on the smoldering coaldump of the Anna coalmine.
Specimen ca.15 cm wide
Copyright: © Frank de Wit      Photo ID: 736826     Uploaded by: Frank de Wit   Upload date: 2016-03-14   View Count: 175    Status: Public galleries    Type: Photo - 4000×3000 (12.0 Mpix)

Measuring vent-temperature

06418340014961161462014.jpg
Anna mine, Alsdorf, Aachen, Cologne, North Rhine-Westphalia, Germany

Measuring the temperature in the vent ("fumarole") of this image -> http://www.mindat.org/photo-736824.html

Mindat.org Photo of the Day - 27th Jan 2020
Copyright: © Frank de Wit      Photo ID: 736825     Uploaded by: Frank de Wit   Upload date: 2016-03-14   View Count: 639    Status: Public galleries    Type: Photo - 4000×3000 (12.0 Mpix)

Vent with kremersite

02416460014961161477670.jpg
Anna mine, Alsdorf, Aachen, Cologne, North Rhine-Westphalia, Germany

Vent ("fumarole") with kremersite,
Unnamed (NH4-Zn-Fe Chloride),
Unnamed (NH4-Mn Chloride-Fluoride(?)-Hydrate), and
Unnamed (NH4-Mn Chloride-Hydrate),
on the smouldering coal dump of the Anna coal mine.

Photo ca. 20 cm wide.
Copyright: © Frank de Wit      Photo ID: 736824     Uploaded by: Frank de Wit   Upload date: 2016-03-14   View Count: 249    Status: Public galleries    Type: Photo - 4000×3000 (12.0 Mpix)

3CF-GWAUnnamed (NH4-Zn-Fe Chloride) (NH4)3(Zn,Fe)Cl5 , Unnamed (NH4-Mn Chloride-Fluoride(?)-Hydrate) (NH4), Mn, Cl, F(?), O, H

Multiple photos available
01937610014946356064723.jpg
Anna mine, Alsdorf, Aachen, Cologne, North Rhine-Westphalia, Germany

Field of View: 5 mm

Unnamed (NH4-Zn-Fe Chloride) (green)
Unnamed (NH4-Mn Chloride-Fluoride(?)-Hydrate) (yellow)
(both on specimens with kremersite)
(photo from 2010, sorry for the low quality)
Copyright: © Frank de Wit      Photo ID: 736822     Uploaded by: Frank de Wit   Upload date: 2016-03-14   View Count: 214    Status: Public galleries    Type: Photo - 854×570 (0.5 Mpix)
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