NDLI: Native arsenic – realgar mineralization in marbles from Saualpe, Carinthia, Austria

Content Provider	Springer Nature Link
Author	Göd, R. Zemann, J.
Copyright Year	2000
Abstract	The “Geochemical Atlas of Austria” shows a notable positive geochemical arsenic anomaly in stream sediments of the Saualpe, eastern Carinthia, Austria. Detailed investigation has shown that it is caused by an unusual kind of mineralization in brecciated marbles. The mineralization consists predominantly of native arsenic (often in small, stellate aggregates) and realgar (± minor orpiment). The As content may reach as much as 1.4 wt-%. The samples investigated do not contain any sulfarsenides and arsenides, and do not show enrichments of other metals: e.g. gold contents are < 5 ppb, Hg contents ≤ 1.3 ppm, Sb contents ≤ 4 ppm. The atomic As/S ratio varies considerably, and surpasses in a number of samples a value of 2. The As mineralization seems to be associated with the formation of late, extremely fine-grained quartz ± carbonate, penetrating the breccia, and is evidently a very late event in the mineralization history of the region. Eine gediegen Arsen – Realgar Vererzung in Marmorender Saualpe, Kärnten, Österreich Der “Geochemische Atlas der Republik Österreich” zeigt in Bachsedimenten der Saualpe, östliches Kärnten, Österreich, eine bemerkenswerte positive geochemische Arsenanomlie. Die detaillierte Untersuchung zeigte, daß sie hauptsächlich durch eine ungewöhnliche Mineralisation in Marmorbrekzien verursacht ist. Diese besteht fast ausschließlich aus gediegen Arsen (oft in kleinen, sternförmigen Aggregaten) und Realgar (± wenig Auripigment). Der As-Gehalt kann 1.4 Gew.-% erreichen. Die untersuchten Proben sind frei von Sulfarseniden und Arseniden, und sie zeigen keine nennenswerten Anreicherungen an anderen Metallen: z. B. sind die Goldgehalte < 5 ppb, die Hg-Gehalte ≤ 1.3 ppm und die Sb-Gehalte ≤ 4 ppm. Das atomare As/S-Verhältnis schwankt beträchtlich und überschreitet in einer Reihe von Proben den Wert 2. Diese As-Mineralisation scheint mit der Bildung von spätem, feinstkörnigem Quarz ± Karbonaten verbunden zu sein und ist in der Mineralisationsgeschichte der Region offensichtlich ein sehr spätes Ereignis.
Starting Page	37
Ending Page	53
Page Count	17
File Format	PDF
ISSN	09300708
Journal	Mineralogy and Petrology
Volume Number	70
Issue Number	1-2
e-ISSN	14381168
Language	English
Publisher	Springer-Verlag
Publisher Date	2000-08-31
Publisher Place	Wien
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Geophysics Geochemistry and Petrology

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