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Bruce Cairncross' Photo Gallery

5WG-CL2Fluorite CaF2 , Quartz SiO2

03660430016011174906673.jpg
Buffalo Fluorspar Mine, Naboomspruit, Waterberg District, Limpopo, South Africa

Field of View: 21 mm

Close up of a 7 cm fluorite and quartz specimen from the Buffalo fluorspar mine. The fluorite crystals are very dark purple. Field of view is 21 mm.
Copyright: © Bruce Cairncross      Photo ID: 1096149     Uploaded by: Bruce Cairncross   View Count: 7   Approval status: Public galleries    Type: Photo - 5312 x 3442 pixels (18.3 Mpix)

FJE-P9UQuartz SiO2

08584340016011174917922.jpg
Orange River, Northern Cape, South Africa

Field of View: 22 mm

A small cluster of quartz crystals with inclusions of what might be chlorite. field of view is 22 mm.
Copyright: © Bruce Cairncross      Photo ID: 1096148     Uploaded by: Bruce Cairncross   View Count: 7   Approval status: Public galleries    Type: Photo - 3948 x 3196 pixels (12.6 Mpix)

C4T-KVNFluorite CaF2

00648900016011159111900.jpg
Orange River, Northern Cape, South Africa

Field of View: 14 mm

A small vug containing yellow fluorite from an unspecified locality on the Orange River. Field of view is 14 mm.
Copyright: © Bruce Cairncross      Photo ID: 1096147     Uploaded by: Bruce Cairncross   View Count: 3   Approval status: Public galleries    Type: Photo - 3404 x 2670 pixels (9.1 Mpix)

LRQ-XKFFluorite CaF2

00674100016011156076461.jpg
Orange River, Northern Cape, South Africa

Field of View: 26 mm

Close-up of a cluster of complexly crystallized fluorite from an unspecified locality on the Orange River. Field of view is 26 mm.
Copyright: © Bruce Cairncross      Photo ID: 1096146     Uploaded by: Bruce Cairncross   View Count: 8   Approval status: Public galleries    Type: Photo - 4623 x 3256 pixels (15.1 Mpix)

H6H-8LLPyrite FeS2

01049580015998259751289.jpg
Richards Bay, Uthungulu District, KwaZulu-Natal, South Africa

Dimensions: 4.6 cm

A pyrite nodule (concretion) self-collected on the beach at Richards Bay. The concretions occur in the shallow-marine, offshore Pleistocene sedimentary strata together with marine vertebrate and invertebrate fossils. During storm events or rough seas, the pyrite nodules are dislodged and washed up onto the beach.
Copyright: © Bruce Cairncross      Photo ID: 1093147     Uploaded by: Bruce Cairncross   View Count: 12   Approval status: Public galleries    Type: Photo - 5184 x 3700 pixels (19.2 Mpix)

Heavy minerals in dune sand

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Richards Bay, Uthungulu District, KwaZulu-Natal, South Africa

Section dug in the unconsolidated dune sand on the coastal beach near the Richard Bay Minerals (RBM) mine. Two sets of cross-bedding can be seen, the overlying set truncating the one below. The foreset layering of the cross-bed sets is clearly demarcated by light and dark layers. The former are mainly white quartz grains, while the black layers are composed of heavy minerals (ilmenite / rutile / magnetite / garnet etc), the "ore body" of the mine. The camera lens cap is about 5 cm.
Copyright: © Bruce Cairncross      Photo ID: 1092930     Uploaded by: Bruce Cairncross   View Count: 34   Approval status: Public galleries    Type: Photo - 3277 x 2116 pixels (6.9 Mpix)

Mining operation at Richards Bay

05897310015997383848713.jpg
Richards Bay, Uthungulu District, KwaZulu-Natal, South Africa

A view of the mining operation at the Richards Bay Minerals (RBM) taken in 1986. The red sand dunes are mined for heavy minerals via the floating dredger and plant. High pressure jets of water are used to spray the dune face (on the far side of the lake), collapsing the unconsolidated sediment. This is then siphoned into the floating plant, the heavy minerals are extracted and the waste sand is pumped out behind the plant. This process causes the operation to slowly advance as the sand is processed ahead of the working and then replaced at the rear. Once the dune sand has been replaced it is rehabilitated. The Indian Ocean can just be seen in the distance between the sand dunes.
Copyright: © Bruce Cairncross      Photo ID: 1092927     Uploaded by: Bruce Cairncross   View Count: 11   Approval status: Public galleries    Type: Photo - 3295 x 2116 pixels (7.0 Mpix)

TNH-E1TQuartz SiO2

00912780015989685703948.jpg
Boekenhoutshoek area, Mkobola, Nkangala District, Mpumalanga, South Africa

Dimensions: 7.6 cm

A sygmoidal-shaped quartz from Boekenhoutshoek. These bent/deformed crystals are rarely found at the locality, 7.6 cm.
Copyright: © Bruce Cairncross      Photo ID: 1073826     Uploaded by: Bruce Cairncross   View Count: 12   Approval status: Public galleries    Type: Photo - 4512 x 4000 pixels (18.0 Mpix)

3AF-QR5Goethite \alpha-Fe3+O(OH) , Quartz SiO2

06990780015989678477402.jpg
Boekenhoutshoek area, Mkobola, Nkangala District, Mpumalanga, South Africa

Dimensions: 6.3 cm

Brown goethite partially coating three "cactus quartz" crystals. The local digger from whom the specimen was obtained appears to have picked off the goethite from the terminations of the main crystals forming an attractive contrast between the coated and uncoated surfaces, 6.3 cm. Obtained on site in the early 2000s.
Copyright: © Bruce Cairncross      Photo ID: 1073825     Uploaded by: Bruce Cairncross   View Count: 18   Approval status: Public galleries    Type: Photo - 4452 x 3815 pixels (17.0 Mpix)

CYE-3FXPyrite FeS2 , Quartz SiO2

Multiple photos available
02811030015989673418901.jpg
Boekenhoutshoek area, Mkobola, Nkangala District, Mpumalanga, South Africa

Field of View: 14 mm

A perfectly formed, tiny pyrite pyritohedron enclosed in the termination of a phantom-zoned quartz variety amethyst from Boekenhouthoek "cactus quartz" locality. The field of view is 14 mm. Specimen was obtained on site during the early 2000s. The entire specimen is shown on the accompanying image.
Copyright: © Bruce Cairncross      Photo ID: 1073823     Uploaded by: Bruce Cairncross   View Count: 18   Approval status: Public galleries    Type: Photo - 3816 x 2992 pixels (11.4 Mpix)
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