7 The Okiep Copper district “Firsts” First economic deposit “discovered” by Europeans in South Africa in1685 (First European settlement in 1652 – hence copper “discovered” only 33 years later)First mine opened by Europeans in South AfricaFirst South African mining company formed in1852First South African geological report written on the copper depositsFirst South African geological map in South Africa – the Namaqualand copper fields.
26 Tweefontein (left 2011; below 1993) Jan Coetzee mine (2011)
27 The Jan Coetzee mine Located 11 km north of Nababeep First worked in 1888 (Cape Copper Company), abandoned 1907(several prospecting pits an 80-m deep shaft)Reopened in 1964 by the O’Kiep Copper Company and finally closed in 19711966 spectacular quartz crystal “cave” opened - 12 X 12 metres across and 6 metres highFloor, walls and roof covered by thousands of crystals and thousands lying loose on the floorEstimated at several tons of quartz, ~ 50,000 specimens!!Largest almost 2m long (185 cm) and weighed 250kg.
28 ( a rich mineralogical heritage) Some Okiep minerals( a rich mineralogical heritage)FerroaxiniteChalcociteGypsumCalciteCalciteChalcopyriteQuartz