Connoisseur's Choice: Aragonite Part 3: Southern Africa.

Autor: Cairncross, Bruce, Southwood, Malcolm
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Zdroj: Rocks & Minerals; Nov/Dec2023, Vol. 98 Issue 6, p518-532, 15p
Abstrakt: Tsumeb Aragonite Categories Most aragonite occurrences at Tsumeb fall into one of the following five categories: "pure" aragonite, I nicholsonite, tarnowitzite, i aragonite flowstone, and pseudomorphs. Aragonite Flowstone The seepage of groundwater through the dolostone host rocks at Tsumeb commonly resulted in the precipitation of sheets of aragonite resembling frozen waterfalls with gently mammilated surfaces on the walls of the underground mine workings. The Kabwe mine aragonite is currently represented by one large preserved specimen consisting of aragonite on vanadinite (Southwood, Cairncross, and Rumsey [26]) (fig. 52). Aprevious Connoisseur's Choice column (Pohwat [22]) featured aragonite from Western Europe (part 1) and beyond (part 2), the latter making brief mention of specimens from Morocco, and Namibia, South Africa. [Extracted from the article]
Databáze: Complementary Index