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Georg Graf's Photo Gallery

YA5-4R7Hematite : Fe2O3

Lerbach, Harz, Lower Saxony, Germany

Dimensions: 8 cm x 4 cm x 2 cm

Found 2009 beside the walking trail in the Lehmtal (Lehm-valley) near Lerbach. 8x4(x2)cm.
Copyright: © Georg Graf      Photo ID: 819782     Uploaded by: Georg Graf   View Count: 23   Approval status: Public galleries    Type: Photo - 2522 x 1793 pixels (4.5 Mpix)

Vang pier

Vang Granite Quarry, Bornholm, Capital Region, Denmark

Pier to forward the granite from the quarry by ship.
Photo ID: 782774     Uploaded by: Georg Graf   View Count: 33   Approval status: Public galleries    Type: Photo - 3264 x 2448 pixels (8.0 Mpix)

Way out to the pier

Vang Granite Quarry, Bornholm, Capital Region, Denmark

Way out to the pier. Much granite was forwarded by ship.
Photo ID: 782773     Uploaded by: Georg Graf   View Count: 32   Approval status: Public galleries    Type: Photo - 3264 x 2448 pixels (8.0 Mpix)

HWN-QQWMagnetite : Fe2+Fe3+2O4

Vang Granite Quarry, Bornholm, Capital Region, Denmark

Dimensions: 40 mm x 70 mm x 50 mm

Grain of Magnetite in Vang-Granite, strongly magnetic.
Photo ID: 782750     Uploaded by: Georg Graf   View Count: 30   Approval status: Public galleries    Type: Photo - 1599 x 2088 pixels (3.3 Mpix)

TJM-3FNBiotite

Vang Granite Quarry, Bornholm, Capital Region, Denmark

Field of View: 30 mm
Largest Crystal Size: 10 mm

Biotite in coarse-grained Vang-Granite.
Photo ID: 782749     Uploaded by: Georg Graf   View Count: 24   Approval status: Public galleries    Type: Photo - 1294 x 1894 pixels (2.5 Mpix)

36K-F61Amphibole Supergroup : AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2

Vang Granite Quarry, Bornholm, Capital Region, Denmark

Field of View: 7 mm

Amphibole ("Hornblende") in Vang-Granite, visually identified. Cleavage is clearly seen. H. grain size approx. 7x10 mm.
Photo ID: 782748     Uploaded by: Georg Graf   View Count: 30   Approval status: Public galleries    Type: Photo - 2592 x 3888 pixels (10.1 Mpix)

Industrial safety at the Rammelsberg Mine

The picture shows working safety at the Rammelsberg Mine in the 16th century. The worker is using gloves at his hands and bark at his lower leg for protection. From Georgius Agricola, XII Books of Mining and Metallurgy.
Photo ID: 266632     Uploaded by: Georg Graf   View Count: 135   Approval status: User gallery    Type: Photo - 449 x 467 pixels (0.2 Mpix)

Pingen at the Rammelsberg

Rammelsberg, Goslar, Harz, Lower Saxony, Germany

A row of day falls at the north side of the Rammelsberg Mountain. Age unknown. Photo was taken in autumn 2008.
Copyright: © Georg Graf      Photo ID: 191224     Uploaded by: Georg Graf   View Count: 774   Approval status: Public galleries    Type: Photo - 972 x 648 pixels (0.6 Mpix)

Upper Flambacher Watercourse, image 2

Clausthal-Zellerfeld, Harz, Lower Saxony, Germany

For winning water to operate mining machines, in the last centuries in the Harz mining area over 100 kilometers of water courses were constructed, of which the Upper Flambacher Watercourse is one. Having crossed a small valley, the water disappears in a tunnel. Autumn 2008.
Copyright: © Georg Graf      Photo ID: 191015     Uploaded by: Georg Graf   View Count: 310   Approval status: Public galleries    Type: Photo - 648 x 972 pixels (0.6 Mpix)

Upper Flambacher Watercourse

Clausthal-Zellerfeld, Harz, Lower Saxony, Germany

For collecting water to work mining machines, in the last centuries over hundred kilometers of water courses were constructed in the Harz mining area. Here we see a tunnel in the Upper Flambacher Watercourse. The water is leaving this tunnel, crosses a small valley, and disappears in an other tunnel. Autumn 2008.
Copyright: © Georg Graf      Photo ID: 191012     Uploaded by: Georg Graf   View Count: 348   Approval status: Public galleries    Type: Photo - 972 x 648 pixels (0.6 Mpix)
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