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Calcite
contact twins on {21-31}
Santa Eulalia, Chihuahua,
Mexico |
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Copper
octahedral skeleton crystal
Tsumeb, Namibia |
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Epitaxy
Rutile upon Hematite
acicular orange crystals
of Rutile orientated in three directions upon a Hematite crystal
Novo Horizonte, Bahia, Brazil |
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Galenite
twin on {111}
on Siderite and Quartz
Neudorf, Harz |
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Galenite
cubic hopper-crystals
Tsumeb, Namibia |
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Kämmererite (Cr variety
of Clinochlore)
twin on {001}
Kop Daglari, Turkey |
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Labradorite
zoned crystal, polished
slice
Golovino, Ukraine |
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Malachite pseudomorph after Azurite
rosette shaped aggregates
Tsumeb, Namibia |
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Markasite
twinned on {110}, upon marl
Misburg, Hannover, Germany |
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Muskovite
rosette-shaped aggregate
of tabular crystals
José Pinto Mine,
Minas Gerais, Brazil |
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Pyrargyrite
crystals upon native arsenic
St. Andreasberg, Harz mountains,
Germany |
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Pyrite
penetration twin on {110}
Cantiere Bacino, Rio Marina,Elba,
Italien
diameter of the twin: 14.5
cm (!) |
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Pyrite
typically striated cubes
Huanzala, Peru
cubes up to 5,5 cm |
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Pyromorphite
green crystals up to 3.5
cm
Bad Ems on the Lahn,
Germany |
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Söhngeite
crystal aggregates upon
Germanite ore
Tsumeb, Otavi mountain area,
Namibia |
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Tourmaline
polished plate perpendicular
to the c-axis of a zoned crystal
Anjanabonoina, Madagascar
diameter: 13.5 cm |
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Zircon
crystal upon white feldspar
Seiland, Alta, Norway
crystal height 5 cm |
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