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Rolf Luetcke's Photo Gallery

NGM-HUPGoethite α-Fe3+O(OH) , Quartz SiO2

08168430015822235685075.jpg
Golden Gate Mine group, Rosemont, Helvetia-Rosemont Mining District, Pima Co., Arizona, USA

Field of View: 4 mm

Dark brown to black, tightly packed acicular crystals coating a pocket in quartz. Rolf Luetcke specimen and photo.
Photo ID: 1031906     Uploaded by: Rolf Luetcke   View Count: 3   Approval status: Public galleries    Type: Photo - 1761 x 1183 pixels (2.1 Mpix)

Y4K-VJGJarosite KFe3+ 3(SO4)2(OH)6

Multiple photos available
01841930015822233028380.jpg
Manila Mine, Cochise County, Arizona, USA

Field of View: 4 mm

Red-brown, spherical jarosite in a quartz pocket. Rolf Luetcke specimen and photo.
Photo ID: 1031904     Uploaded by: Rolf Luetcke   View Count: 6   Approval status: Public galleries    Type: Photo - 1978 x 1417 pixels (2.8 Mpix)

66L-JTRLimonite (Fe,O,OH,H2O) , Quartz SiO2

04264170015821383888061.jpg
Golden Gate Mine group, Rosemont, Helvetia-Rosemont Mining District, Pima Co., Arizona, USA

Field of View: 11 mm

Yellow, earthy limonite with and coating quartz crystals. Rolf Luetcke specimen and photo.
Photo ID: 1031723     Uploaded by: Rolf Luetcke   View Count: 2   Approval status: Public galleries    Type: Photo - 1936 x 1506 pixels (2.9 Mpix)

FUJ-WHJHematite Fe2O3 , Limonite (Fe,O,OH,H2O) , Quartz SiO2

06739970015821382754268.jpg
Golden Gate Mine group, Rosemont, Helvetia-Rosemont Mining District, Pima Co., Arizona, USA

Field of View: 9 mm

Red, earthy to brown to nearly black hematite with minor yellow limonite and quartz. Rolf Luetcke specimen and photo.
Photo ID: 1031722     Uploaded by: Rolf Luetcke   View Count: 2   Approval status: Public galleries    Type: Photo - 2022 x 1389 pixels (2.8 Mpix)

QGH-87AGoethite α-Fe3+O(OH) , Calcite CaCO3 , Quartz SiO2

08707880015821382031150.jpg
Golden Gate Mine group, Rosemont, Helvetia-Rosemont Mining District, Pima Co., Arizona, USA

Field of View: 4 mm

Golden brown layer of minute acicular crystals of goethite coating quartz with minor, white calcite. Rolf Luetcke specimen and photo.
Photo ID: 1031721     Uploaded by: Rolf Luetcke   View Count: 2   Approval status: Public galleries    Type: Photo - 1806 x 1409 pixels (2.5 Mpix)

14F-KXNCarrollite Cu(Co,Ni)2S4

Multiple photos available
08130900015821379186012.jpg
Kamoto Principal Mine, Kamoto, Kolwezi mining district, Lualaba, DR Congo

Dimensions: 10 mm x 7 mm

Group of silvery carrolite crystals with a dark coating. Former Ewald Muller collection. Rolf Luetcke specimen and photo.
Photo ID: 1031719     Uploaded by: Rolf Luetcke   View Count: 6   Approval status: Public galleries    Type: Photo - 1801 x 1414 pixels (2.5 Mpix)

MGR-34GWillemite Zn2SiO4 , Quartz SiO2

Multiple photos available
05382810015821172441307.jpg
Golden Gate Mine group, Rosemont, Helvetia-Rosemont Mining District, Pima Co., Arizona, USA

Field of View: 4 mm

Colorless to white, short, hexagonal willemite crystals on quartz with iron oxides. Rolf Luetcke specimen and photo.
Photo ID: 1031695     Uploaded by: Rolf Luetcke   View Count: 3   Approval status: Public galleries    Type: Photo - 2019 x 1495 pixels (3.0 Mpix)

X4P-EU8Quartz SiO2

00655870015821170562177.jpg
Golden Gate Mine group, Rosemont, Helvetia-Rosemont Mining District, Pima Co., Arizona, USA

Field of View: 5 mm

Elongated, colorless quartz crystals with a bit of iron oxide staining in massive calcite. Rolf Luetcke specimen and photo.
Photo ID: 1031694     Uploaded by: Rolf Luetcke   View Count: 1   Approval status: Public galleries    Type: Photo - 1853 x 1477 pixels (2.7 Mpix)

6RM-RJLPyrite FeS2 , Quartz SiO2

04552380015821169537456.jpg
Golden Gate Mine group, Rosemont, Helvetia-Rosemont Mining District, Pima Co., Arizona, USA

Field of View: 4 mm

Golden pyrite crystals in quartz. Rolf Luetcke specimen and photo.
Photo ID: 1031693     Uploaded by: Rolf Luetcke   View Count: 1   Approval status: Public galleries    Type: Photo - 1675 x 1388 pixels (2.3 Mpix)

GEL-48DMalachite Cu2(CO3)(OH)2 , Hematite Fe2O3 , Quartz SiO2

09498110015821172444830.jpg
Golden Gate Mine group, Rosemont, Helvetia-Rosemont Mining District, Pima Co., Arizona, USA

Field of View: 4 mm

Green malachite on hematite stained quartz. Rolf Luetcke specimen and photo.
Photo ID: 1031692     Uploaded by: Rolf Luetcke   View Count: 1   Approval status: Public galleries    Type: Photo - 2004 x 1516 pixels (3.0 Mpix)
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