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Wolfgang Hampel's Photo Gallery

NTF-A0GCovellite CuS , Cuprite Cu2O , Chalcopyrite CuFeS2

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R.H.A. tungsten mine, Hwange District, Matabeleland North, Zimbabwe

Field of View: 200 μm

Polished section of copper ore where a mixture of covellite (blue) and cuprite (red) replaces chalcopyrite along the edges.
Copyright: © Wolfgang Hampel      Photo ID: 954310     Uploaded by: Wolfgang Hampel   View Count: 42   Approval status: Public galleries    Type: Photo - 1280 x 960 pixels (1.2 Mpix)

RY5-7U7Arsenopyrite FeAsS , Chalcopyrite CuFeS2

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R.H.A. tungsten mine, Hwange District, Matabeleland North, Zimbabwe

Field of View: 80 mm

A cut and oiled drill core with a quartz vein in mica schist showing subhedral, silvery metallic arsenopyrite and bronze coloured chalcopyrite. This is the first reported occurrence of arsenopyrite at RHA after more than 120 years of intermittent mining. Polished sections of this sample will probably reveal other ore minerals as spot readings with a portable XRF have as well shown high cobalt and silver values. From a drill core drilled in October 2018.
Copyright: © Wolfgang Hampel      Photo ID: 914012     Uploaded by: Wolfgang Hampel   View Count: 46   Approval status: Public galleries    Type: Photo - 2324 x 1417 pixels (3.3 Mpix)

E35-47DFluorite CaF2 , Pyrite FeS2

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R.H.A. tungsten mine, Hwange District, Matabeleland North, Zimbabwe

Field of View: 150 mm

A thin vein in mica schist with green and purple fluorite, as well as some minor pyrite. Fluorite seems to be very rare at RHA; in intermittent production since 1890, this is the first example of fluorite from RHA. From a drill core drilled in September 2018.
Copyright: © Wolfgang Hampel      Photo ID: 910881     Uploaded by: Wolfgang Hampel   View Count: 52   Approval status: Public galleries    Type: Photo - 3850 x 1560 pixels (6.0 Mpix)

74M-XWWLepidolite, Albite Na(AlSi3O8)

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Murrua, Alto Ligonha District, Zambezia Province, Mozambique

Largest Crystal Size: 52 mm

Dark purple lepidolite probably replacing earlier tourmaline; XRD has shown that the lepidolite is intergrown with cookeite, the whitish groundmass is mainly cleavelandite. Found in June 2018 at the ROM pad of Murrua Mine.
Copyright: © Wolfgang Hampel      Photo ID: 900090     Uploaded by: Wolfgang Hampel   View Count: 50   Approval status: Public galleries    Type: Photo - 3567 x 2337 pixels (8.3 Mpix)

0DN-L96Indicolite A(D3)G6(T6O18)(BO3)3X3Z

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Murrua, Alto Ligonha District, Zambezia Province, Mozambique

Field of View: 41 mm

A somewhat strange specimen with a subhedral schorl crystal in quartz surrounded by indicolite (i.e. blue tourmaline) grains. The indicolite is XRD confirmed, but it is impossible to distinguish the different members of the tourmaline group by XRD only; most likely it is an elbaite. I collected it in June 2018 on the ROM pad of the Murrua Mine. Any collecting at the mine is prohibited, the mining concession is fenced in and heavily guarded.
Copyright: © Wolfgang Hampel      Photo ID: 898901     Uploaded by: Wolfgang Hampel   View Count: 65   Approval status: Public galleries    Type: Photo - 3220 x 2315 pixels (7.5 Mpix)

61C-G3WCalcite CaCO3

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Lagoa Azul, Lobata District, São Tomé Island, São Tomé and Príncipe

Field of View: 25 mm

Vesicular basalt with small calcite crystals and radiating aggregates.
Copyright: © Wolfgang Hampel      Photo ID: 897826     Uploaded by: Wolfgang Hampel   View Count: 97   Approval status: Public galleries    Type: Photo - 1896 x 1453 pixels (2.8 Mpix)

Rounded basaltic boulders

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Lagoa Azul, Lobata District, São Tomé Island, São Tomé and Príncipe

In situ photo of rounded basaltic boulders, often strongly vesicular. No other minerals than calcite seem to be present. Photo taken in May 2018.
Copyright: © Wolfgang Hampel      Photo ID: 897825     Uploaded by: Wolfgang Hampel   View Count: 61   Approval status: Public galleries    Type: Photo - 4608 x 2592 pixels (11.9 Mpix)

Vesicular basalt with calcite

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Lagoa Azul, Lobata District, São Tomé Island, São Tomé and Príncipe

Typical vesicular basalt from this lagoon, during a short site visit I could discover only calcite crystals, no traces of zeolites or other minerals. Photo taken in May 2018.
Copyright: © Wolfgang Hampel      Photo ID: 897824     Uploaded by: Wolfgang Hampel   View Count: 84   Approval status: Public galleries    Type: Photo - 4608 x 2592 pixels (11.9 Mpix)

Baobab trees on basalt

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Lagoa Azul, Lobata District, São Tomé Island, São Tomé and Príncipe

A small peninsula underlain by vesicular basalt. Photo taken in May 2018.
Copyright: © Wolfgang Hampel      Photo ID: 897823     Uploaded by: Wolfgang Hampel   View Count: 55   Approval status: Public galleries    Type: Photo - 4608 x 2592 pixels (11.9 Mpix)

Pico Maria Fernandes, a phonolitic plug

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São Tomé Island, São Tomé and Príncipe

Pico Maria Fernandes, a young phonolitic plug in the south east of São Tomé Island. Photo taken in May 2018.
Copyright: © Wolfgang Hampel      Photo ID: 897818     Uploaded by: Wolfgang Hampel   View Count: 36   Approval status: Public galleries    Type: Photo - 2592 x 4070 pixels (10.5 Mpix)

Pico Cão Grande, a young phonolitic plug

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São Tomé Island, São Tomé and Príncipe

The famous Pico Cão Grande (Portuguese for “Great Dog Peak”), a needle-shaped phonolitic plug of Holocene (?) age in the south of São Tomé Island. It rises dramatically over 370 m above the surrounding terrain and the summit is 668 m above sea level.

It is situated in the Obo National Park and was first climbed in 1975 only. I have no information whether any noteworthy minerals occur here. Photo taken in May 2018.
Copyright: © Wolfgang Hampel      Photo ID: 897817     Uploaded by: Wolfgang Hampel   View Count: 43   Approval status: Public galleries    Type: Photo - 4608 x 2592 pixels (11.9 Mpix)

Manongarivo Massif

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Manongarivo Massif, Djangoa Commune, Ambanja, Diana, Madagascar

The Manongarivo Massif, an alkaline intrusion, seen from National Highway RN6 in September 2011.
Copyright: © Wolfgang Hampel      Photo ID: 896759     Uploaded by: Wolfgang Hampel   View Count: 30   Approval status: Public galleries    Type: Photo - 3072 x 2304 pixels (7.1 Mpix)

9U8-PWPBauxite

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Manantenina, Manantenina, Taolañaro, Anosy, Madagascar

Field of View: 120 mm

Broken boulder of rather iron rich bauxite.
Copyright: © Wolfgang Hampel      Photo ID: 883036     Uploaded by: Wolfgang Hampel   View Count: 93   Approval status: Public galleries    Type: Photo - 2272 x 1704 pixels (3.9 Mpix)

Bauxite showing near Manantenina

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Manantenina, Manantenina, Taolañaro, Anosy, Madagascar

One of the many bauxite showings along National Highway 12A near Manantenina. Photo taken in November 2005.
Copyright: © Wolfgang Hampel      Photo ID: 883033     Uploaded by: Wolfgang Hampel   View Count: 66   Approval status: Public galleries    Type: Photo - 2272 x 1704 pixels (3.9 Mpix)

River sand mining in the Taegong River, Pyongyang

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Pyongyang City, North Korea

River sand mining/dredging operation in the Taegong River, Pyongyang. Photo taken in September 2004 from my room at the Yanggakdo Hotel.
Copyright: © Wolfgang Hampel      Photo ID: 883005     Uploaded by: Wolfgang Hampel   View Count: 45   Approval status: Public galleries    Type: Photo - 2592 x 1702 pixels (4.4 Mpix)

Small-scale mining of quartz syenite aggregate

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Bemanondrobe, Nosy Be, Diana, Madagascar

Small-scale mining of quartz syenite aggregate (Ampasindava Suite, Neogene) near Befotaka in the northern part of Nosy Be. Photo taken in January 2011.
Copyright: © Wolfgang Hampel      Photo ID: 883004     Uploaded by: Wolfgang Hampel   View Count: 34   Approval status: Public galleries    Type: Photo - 2304 x 3072 pixels (7.1 Mpix)

Basanitic tuff / pozzolan

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Bemanondrobe, Nosy Be, Diana, Madagascar

Outcrop of basanitic tuffs (Maromokotra Group, Neogene age) at the beach south of Ambatoloaka village in the south-western end of Nosy Be island. The lower parts are rich in volcanic bombs (diameter > 64mm), the central part is lapilli with fragments <64mm. The white parts are pozzolan and full of calcite/aragonite filled vesicles. I could not find any traces of zeolites or other minerals of interest. Photo taken in January 2011.
Copyright: © Wolfgang Hampel      Photo ID: 883003     Uploaded by: Wolfgang Hampel   View Count: 38   Approval status: Public galleries    Type: Photo - 2304 x 3072 pixels (7.1 Mpix)

DPA-A3WChrysotile Mg3(Si2O5)(OH)4

02235770015139345557219.jpg
Zulu pegmatite, Pioneer village No. 2, Insiza District, Matabeleland South, Zimbabwe

Largest Crystal Size: 10 mm

Outcrop photo of two generations of chrysotile fibres filling in cracks in an ultramafic rock. At Zulu, chrysotile is only found in ultramafic sequences west of the pegmatite zone.
Copyright: © Wolfgang Hampel      Photo ID: 861593     Uploaded by: Wolfgang Hampel   View Count: 134   Approval status: Public galleries    Type: Photo - 2014 x 3241 pixels (6.5 Mpix)

9W1-ML0Fluorite CaF2 , Epidote {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

00883840015138617284315.jpg
Zulu pegmatite, Pioneer village No. 2, Insiza District, Matabeleland South, Zimbabwe

Field of View: 20 mm

A drill core with purple fluorite and epidote needles in a quartz vein. Fluorite is quite uncommon at Zulu.
Copyright: © Wolfgang Hampel      Photo ID: 861493     Uploaded by: Wolfgang Hampel   View Count: 94   Approval status: Public galleries    Type: Photo - 2503 x 2772 pixels (6.9 Mpix)

KJF-60KSpodumene LiAlSi2O6

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Deep Purple Pegmatite, Pioneer village No. 4, Insiza District, Matabeleland South, Zimbabwe

Field of View: 140 mm

Massive, slightly pinkish spodumene found in July 2017 at the long abandoned mine.
Copyright: © Wolfgang Hampel      Photo ID: 861360     Uploaded by: Wolfgang Hampel   View Count: 68   Approval status: Public galleries    Type: Photo - 3559 x 2422 pixels (8.6 Mpix)
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