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Erik Jonsson's Photo Gallery

P1P-83HGrootfonteinite Pb3O(CO3)2 , Cerussite PbCO3 , Jacobsite Mn2+Fe3+2O4 , Hausmannite Mn2+Mn3+2O4

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Kombat Mine, Kombat, Otavi Constituency, Otjozondjupa Region, Namibia

Field of View: 5 mm

Grootfonteinite as aggregates of micaceous, highly lustrous subhedral, colourless to grey-white crystals intergrown with cerussite and associated with Mn-Fe oxides (jacobsite, hausmannite). Kombat mine, probably from the Asis West Sector. Photo: E. Jonsson.
Macro photo from type material, see also:

Siidra, O. I., Jonsson, E., Chukanov, N. V., Nekrasova, D. O., Pekov, I. V., Depmeier, W., Polekhovsky, Y. S. & Yapaskurt, V. O. 2018: Grootfonteinite, Pb3O(CO3)2, a new mineral species from the Kombat Mine, Namibia, merotypically related to hydrocerussite. European Journal of Mineralogy 30, 383-391.

Copyright: © Erik Jonsson      Photo ID: 1005073     Uploaded by: Erik Jonsson   Upload date: 2019-10-09   View Count: 324    Status: Public galleries    Type: Photo - 991×1024 (1.0 Mpix)

Q98-LWERoquesite CuInS2 , Bornite Cu5FeS4 , Wittichenite Cu3BiS3 , Chalcopyrite CuFeS2 , Bismuth Bi , Digenite Cu9S5 , Covellite CuS

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Charrier Mine, Laprugne, Vichy, Allier, Auvergne-RhĂŽne-Alpes, France

Field of View: 0.8 mm

Roquesite as a medium-grey aggregate (central right part of image) in pinkish-brownish bornite associated with fracture and grain-boundary-hosted blue digenite and covellite, yellowish chalcopyrite, subhedral light grey (near white) wittichenite (lower left), minor native bismuth (far right, white) and groundmass silicates (darkest grey). Well studied by optical methods and confirmed by SEM-EDS analysis. Charrier mine (type locality), Allier, France. Photomicrograph in plane-polarised reflected light of polished section.
Photo: Erik Jonsson.
Copyright: © Erik Jonsson      Photo ID: 1000954     Uploaded by: Erik Jonsson   Upload date: 2019-09-19   View Count: 160    Status: Public galleries    Type: Photo - 1280×1024 (1.3 Mpix)

0XX-N52Roymillerite Pb24Mg9(Si10O28)(CO3)10(BO3)(SiO4)(OH)13O5 , Rhodochrosite MnCO3 , Cerussite PbCO3 , Jacobsite Mn2+Fe3+2O4

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Kombat Mine, Kombat, Otavi Constituency, Otjozondjupa Region, Namibia

Field of View: 1.5 mm

SEM back-scattered electron (BSE) image of platy crystals (note cleavage parallell to elongation) of roymillerite, in a groundmass of rhodochrosite, cerussite with associated jacobsite. Kombat mine, probably Asis West Sector.
Studied section from part of cotype specimen. Photo: Erik Jonsson. See also: Chukanov, N. V., Jonsson, E., Aksenov, S. M., Britvin, S. N., Rastsvetaeva, R. K., Belakovskiy, D. I. & Van, K. V. 2017: Roymillerite, Pb24Mg9(Si9AlO28)(SiO4)(BO3)(CO3)10(OH)14O4, a new mineral: mineralogical characterization and crystal chemistry. Physics and Chemistry of Minerals 44, 685-699. DOI 10.1007/s00269-017-0893-2

Copyright: © Erik Jonsson      Photo ID: 1000703     Uploaded by: Erik Jonsson   Upload date: 2019-09-18   View Count: 161    Status: Public galleries    Type: Photo - 1024×768 (0.8 Mpix)

View of open pit at GĂ„sgruvan

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GĂ„sgruvan Quarry, Persberg ore district, Filipstad, VĂ€rmland County, Sweden

View of GĂ„sgruvan open pit,two collectors on the lower left for scale. Photo by Erik Jonsson, September 2014.

Leica M Summicron 35mm, Kodak T-Max b/w film.
Photo ID: 659353     Uploaded by: Erik Jonsson   Upload date: 2015-01-11   View Count: 358    Status: Public galleries    Type: Photo - 3637×2432 (8.8 Mpix)

L9T-JCYMacedonite PbTiO3 , Hausmannite Mn2+Mn3+2O4 , Calcite CaCO3

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LĂ„ngban Mine, LĂ„ngban Ore District, Filipstad, VĂ€rmland County, Sweden

Euhedral, cubic crystals of translucent yellow macedonite (centre, and lowermost centre) in translucent calcite, with associated hausmannite (greyish, with deep red internal reflexes).

Photomicrograph in reflected, polarised light, nearly crossed polars.
Scale bar (red, upper left) equals 50 micrometers. Focus was set slightly below the surface of the section (cf. slightly blurred hausmannite), to increase visibility of the crystal morphology.

Macedonite verified by SEM-EDS analysis.
Copyright: © Erik Jonsson      Photo ID: 523570     Uploaded by: Erik Jonsson   Upload date: 2013-03-23   View Count: 181    Status: Public galleries    Type: Photo - 3840×3072 (11.8 Mpix)

View over part of the upper dumps and the Nya Schaktet (New Shaft) headframe at LĂ„ngban

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LĂ„ngban Mine, LĂ„ngban Ore District, Filipstad, VĂ€rmland County, Sweden

View over part of the upper dumps and the typically red, wooden Nya Schaktet (New Shaft) headframe at LĂ„ngban. This part of the dump is generally prohibited to collect from, and therefore relatively little touched. The original contours of the conical piles of dolomite-rich material (hence their light colour) are very well-preserved.

Photo by Erik Jonsson in August 2006.
Copyright: © Erik Jonsson      Photo ID: 521540     Uploaded by: Erik Jonsson   Upload date: 2013-03-16   View Count: 1624    Status: Public galleries    Type: Photo - 2592×1944 (5.0 Mpix)

8R9-87HLĂ„ngbanshyttanite Pb2Mn2Mg(AsO4)2(OH)4·6H2O , Antigorite Mg3(Si2O5)(OH)4

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LĂ„ngban Mine, LĂ„ngban Ore District, Filipstad, VĂ€rmland County, Sweden

SEM photo showing strongly elongated, platy crystals of lÄngbanshyttanite, with minor manganoan antigorite as groundmass/background.

SEM-secondary electron image (SEI). Scale bar in image equals 10 micrometers.
From the type specimen.
Copyright: © Erik Jonsson      Photo ID: 518795     Uploaded by: Erik Jonsson   Upload date: 2013-03-01   View Count: 702    Status: Public galleries    Type: Photo - 1440×1920 (2.8 Mpix)
 
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