Olie-2 (Olievenput) diamond-bearing pipe anomaly in Boshof district, South Africa | ||
| Journal of Gems And Precious Metals | ||
| دوره 1، شماره 1، تیر 2021، صفحه 1-11 اصل مقاله (1.42 M) | ||
| شناسه دیجیتال (DOI): 10.29253/gem.2021.101021 | ||
| نویسنده | ||
| Jaime L.B. Presser* | ||
| JP-E, Asunción Paraguay | ||
| چکیده | ||
| At the end of 2014, around the so-called Loxtondal Orangeitic (now called Kaapval-type lamproites) cluster, in Boshof district, two circular anomalies (~540 to ~1100 meters in diameter) were identified by Landsat Satellite Images and interpreted as being of "kimberlites" pipes; probable anomaly which were referred to as Olie -1 and Olie-2. Subsequently, 100 kg of soil samples (horizon A/B) were taken for each of these anomalies. From them there was a high concentration of indicator minerals (IM): olivine, garnets (violets, reds and oranges), chromites, ilmenites, rutile, frosting tourmaline, zircon and among them some crystals of micro and macro diamonds. The high concentration of IM on Olie-2 led to focus the work on it. IM of Olie-2 was burned in HFl and by caustic fusion what contributed about 86 macro ( | ||
| کلیدواژهها | ||
| Loxtondal kaapvaal؛ type lamproite cluster 37.5 mW/m2 surface heat flow Large pipe anomalies High concentration of indicator minerals Diamonds | ||
| عنوان مقاله [English] | ||
| Olie-2 (Olievenput) diamond-bearing pipe anomaly in Boshof district, South Africa | ||
| نویسندگان [English] | ||
| Jaime L.B. Presser | ||
| JP-E, Asunción Paraguay | ||
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