Johnston Namibia CC mined specimens until late 2003. Prior to Mr. Johnston and Mr. Eysselein mining specimens, Okorusu Fluorspar (Pty) Ltd informally collected and offered specimens for sale, with proceeds being used for community development. ... ⓘ …
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The Damara Orogen, or the Damara metamorphic belt (Namibia) is a part of the Pan-African Orogenic Belt that surrounds and dissects the Africa continent (Fig. 1).The Pan-African Belt is made up of a 400 km wide, intracontinental arm trending northeast between the Congo and Kalahari cratons and a 150 km wide coastal arm that extends as far north as the …
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In this project, pegmatite minerals and construction materials were selected for investigation from a wide range of non-metallic minerals. Pegmatites are coarse-grained …
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This report analyzes the Namibian feldspar market and its size, structure, production, prices, and trade. Visit to learn more.
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Aquamarine with Schorl and Feldspar Erongo Mtns., Karibib Con., Erongo Region, Namibia Ex. Dr. Erika Pohl-Ströher - 91600 Cabinet, 10.9 x 8.6 x 6.9 cm Start Time: 10/10 ... Combinations such as this fine cabinet-specimen are absolutely classic for the famous Erongo Region in Namibia. Well-formed, powder-blue Aquamarines to 2.8 cm are nestled ...
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This note describes the occurrence and chemical composition of porphyroblastic K-feld-spar from a new locality in low-grade marbles of the Pan-African Damara Sequence in the Outjo District, …
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In the semi-massive sulfide breccias ... hydrothermal gold deposit in the Southern Central Zone of the PanAfrican Damara Orogen in Namibia. Garnet.
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Numerous pegmatite bodies occur in several distinct belts within the Damara orogen of central Namibia. Many of the pegmatites have been mined extensively for Sn, Li, Nb, Ta, Cs, mica, feldspar, and gem tourmaline and gem beryl.
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Former open-pit fluorite mining and processing at the Okorusu carbonatite deposit, Namibia, resulted in a large tailings dump comprising an old (~553 kt) and a new tailings part (~3.8 Mt).
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From a location more famous for amethyst and quartz, this is an elegant, towering cluster of sharp pearlescent white Orthoclase feldspar crystals that have a faint light yellowish hue. The dramatic pseudo-hexagonal crystals are sharply terminated with the dominate center crystal, 12.8 cm long and 2.1 cm wide, majestically rising above the grouping.
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Therefore, this study investigates the occurrence and geochemical composition of Namibian feldspar to identify and promote local downstream opportunities. Feldspar is one of the most …
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Selected clay and dimension stone occurrences as well as pegmatite-hosted feldspar and lithium-bearing minerals were investigated in detail. In Namibia, pegmatites occur in the south …
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Okorusu Mine, Otjiwarongo Constituency, Otjozondjupa Region, Namibia : An open pit fluorite mine located on Marburg Farm 1, 62 km north of Otjiwarongo town. Part of an alkaline igneous …
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According to Volza's Turkey Import data, Turkey imported 208 shipments of Feldspar during Mar 2023 to Feb 2024 (TTM). These imports were supplied by 54 foreign exporters to 63 Turkey buyers, marking a growth rate of 21% compared to the preceding twelve months. Within this period, in Feb 2024 alone, Turkey imported 15 Feldspar shipments. This marks a year-on-year …
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Myrmekites developed within metagranites of the Pofadder Shear Zone (PSZ) in southern Namibia were investigated to understand how alkali feldspar deforms under fluid-poor mid-crustal conditions.
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Feldspar Potential in Namibia 8 2 What is feldspar Feldspar minerals make up 60 – 65 % of the Earth's crust and are thus the most important rock forming minerals. They belong to the group of silicates and are commonly expressed as three endmembers: potassium/potash fel d-spar (varieties orthoclase, sanidine, microcline, adular; KAlSi 3 O 8 ...
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There is considerable economic potential for feldspars as a constituent in the production of ceramics and glass, among others. This study aims to illustrate the potential of feldspar occurrences in Namibia and thus promote local value addition.
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Here is an orthoclase feldspar specimen that was collected from the Erongo Mountains in Namibia. Under short wave UV light, the feldspar fluoresces a vibrant pink-red color. Orthoclase is a feldspar mineral with the chemical formula KAlSi₃O₈ and a hardness of 6 - 6.5 on the Mohs hardness scale.
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In 2019, mining contributed 9.3 % to the Namibian gross domestic product and more than 50 % to its export revenues. The mining industry also has a significant impact on Namibian society …
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Feldspar Potential in Namibia – Evaluation of Economic Suitability (2020) (PDF, 3 )
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Namibia's Many Meteorites. Our survey of Namibia's geological treasures started as soon as we deplaned in Windhoek, Namibia's capital. Windhoek is a quiet, quaint and clean city in the center of the country. ... Ninety to 95 percent of the sand in the area is silica. In some places, feldspar, magnetite and ilmenite create black stripes ...
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'Feldspar Group' (not an IMA approved species) ... Windhoek (Namibia) and Lucerne (Switzerland), Botswana is the single... locally to cutting operations in South Africa, Namibia and Botswana. In South Africa, DTC the arrangements: O'Donoghue, Michael (2006) Gems : their sources, descriptions and identification (6th ed.) Butterworth-Heinemann.
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Here is a beautiful association of black tourmaline (schorl) and white orthoclase feldspar, collected from the Erongo Mountains in Namibia. The schorl features excellent vitreous luster. Schorl, also known as "black tourmaline" or "black schorl", is a black form of tourmaline that often occurs as lustrous prismatic crystals.
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