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Copiapite Group from South America
QP8-MA9Copiapite Group, Alunogen Al2(SO4)3·17H2O , Chalcanthite CuSO4·5H2O
Assemblage of 3 sulphates. from Quetena mine, Calama, El Loa Province, Antofagasta Province, Chile.
A:yellow pseudo-orthorhombic plates-SXRD: Copiapite group, most probably magnesiocopiapite [7.35, 7.39, 18.80, 91.4, 98.8, 102.2]
B:Alunogen (white +/- opaque plates with good cleavage/partially dehydrated?, analysed by SXRD
C: Chalcanthite, bluish grains, analysed by SXRD.
Fov; 5x5 mm. aprox; foto & collection A.Molina/M.Dini
Many thanks to Dr. Uwe Kolitsch who has analysed the material
T64-C9WMagnesiocopiapite MgFe3+4(SO4)6(OH)2·20H2O
Field of View: 2.5 mm
Aggregate of yellow crystals, thin, of magnesiocopiapite (note the triclinic form of crystals, especially, to the left). Collection and photo of Gianfranco Ciccolini. Nikon D610, bellows, Schneider Kreuznach 28mm; f:4. Focal using 5.6.
K29-1CTMagnesiocopiapite MgFe3+4(SO4)6(OH)2·20H2O
Field of View: 0.9 mm
Yellow magnesiocopiapite crystal.
Edx analysis was made on this sample by Dr. Bär, Bad Elster, Germany.
Sony Alpha 7R IV A/Mitutoyo Plan Apo X 20/Achromatic doublet retro/"Stone Master Stack Unit" linear-actor & Control/Aperture.
Photo & Collection Christophe Boutry/April 2024.
TWH-TY7Ferricopiapite Fe3+0.67Fe3+4(SO4)6(OH)2·20H2O , Parabutlerite Fe3+(SO4)(OH)·2H2O
Field of View: 2 mm
Sony Nex 7, bellows, Mitutoyo M Plan Apo 20x, aperture, Raynox DCR-250 retro, THK linear actor, stack shot control.
Pale yellow plates of ferricopiapite and orange prisms of parabutlerite. Visually identified.
Collection and Photo Stephan Wolfsried
GNG-80UAluminocopiapite Al2/3Fe3+4(SO4)6(OH)2·20H2O
Picture width is 4mm. Yellow-brown intergrown crystals of Aluminocopiapite. Depth of field is achieved with CombineZM.
EYT-905Aluminocopiapite Al2/3Fe3+4(SO4)6(OH)2·20H2O
Picture width is 40mm. Yellow to dark-yellow crystalline Aluminocopiapite.
505-D5DAluminocopiapite Al2/3Fe3+4(SO4)6(OH)2·20H2O
Width of field 2.5 mm. Collection of Jesse Crawford. The depth of field has been enhanced using CombineZP (7 frames). Equipment: Nikon D-100 digital camera on a homemade microscope.
DHL-LMEAluminocopiapite Al2/3Fe3+4(SO4)6(OH)2·20H2O
Dimensions: 22 mm x 14 mm
Pale yellow to brownish clusters of tightly packed aluminocopiapite crystals. Former Jaroslav Hyrsl collection. Rolf Luetcke specimen and photo.
77X-XV5Aluminocopiapite Al2/3Fe3+4(SO4)6(OH)2·20H2O
Dimensions: 2 cm x 1.4 cm
Yellow aluminocopiapite on matrix.
Ex Steffen Möckel Collection (label).
Photographed by, and in the collection of Dan Costian.
93H-QWUAluminocopiapite Al2/3Fe3+4(SO4)6(OH)2·20H2O
Dimensions: 4.5 cm x 3.2 cm
Pale tan to bright yellow Aluminocopiapite on unidentified purple matrix (most likely Coquimbite)
Ex Chris Deroo collection
Acquired from Rik Dillen at the Nautilus mineral show in Ghent, Belgium on 18 March 2018