Geochemical Atlas – Erzgebirge and Vogtland
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31 0000 35 0000 39 0000 43 0000 60000 60000 Project partners: 56 56 Geochemical Atlas – Erzgebirge and Vogtland Arsenic in stream sediments Arsenic (As) shows a log normal distribution with a deposits of Marienberg and Wolkenstein. In the tendency to right skew. Arithmetic average and eastern Erzgebirge only two areas of Hainichen median are at 57 mg/kg and 27 mg/kg, respectively. As > 100 mg/kg exist encompassing the Freiberg The range between maximum (6830 mg/kg) and mining district and the area between the Sadisdorf minimum concentration (0.6 mg/kg) is enormous. and Rehefeld deposits. At the Sadisdorf deposit , Project supported by: Arsenic is a ubiquitous element accompanying Cu, Ag and Sn were historically mined and various mineralising events. Average As levels in processed. In contrast, the Rehefeld deposit areas of Neoproterozoic and Lower Paleozoic includes carbonate hosted stratiform Pb-Zn Freiberg metamorphic rocks are higher than in areas with mineralisation. Small spots of similar As levels intrusive and younger Paleozoic sedimentary rocks. accompany the Ag/Pb/Zn vein deposit of Mohorn- Dippoldiswalde Areas of high As content (As > 250 mg/kg) coincide Grund and an area NE of Seiffen. Furthermore, As with the central Freiberg mining district, the levels > 60 mg/kg occur near the Sn-greisen Gottesberg Sn-greisen deposit as well as the deposits of Altenberg and Zinnwald-Cinovec as well Brunndöbra (Ba) and Schneckenstein (U) deposit. as in the area of the ring-shaped phyllite and Also, areas with As > 100 mg/kg include the greisen micaschist envelope of the Schwarzenberg gneiss and vein deposits of Geyer-Ehrenfriedersdorf, the cupola. Minima (As < 10 mg/kg) occur in BiCoNi district of Johanngeorgenstadt and metasediments near Adorf and in gneisses of the Schneeberg, stratiform Sn mineralisation of the southern central Erzgebirge. Westerzgebirge complex deposit and polymetallic Altenberg Zschopau Stollberg Sayda 20000 20000 Scale: 1 : 400,000 56 56 Localities Kilometres River 05 10 20 Analysed fraction: < 0.18 mm Analysed by: ALS Minerals Major fault Marienberg Analytical method: ME-MS41 Kirchberg (Ultra Trace Aqua Border D / CZ Regia ICP-MS) Arsenic Schneeberg [mg / kg] ¯ Annaberg-Buchholz < 6.3 Schwarzenberg 6.3 - 10 10 - 16 Auerbach 16 - 25 25 - 40 Bergen 40 - 63 63 - 100 Number of samples: 4732 100 - 160 Oelsnitz Min: 0.6 mg/kg Max: 6830 mg/kg 160 - 250 Important Mineral Occurrences Arithmetic Mean: 57 mg/kg W, ± Mo Geometric Mean: 29.2 mg/kg 250 - 400 Sn, ± W, ± Cu, ± F, ± Li, ± Rb, ± Bi Median: 27.3 mg/kg a1 > 400 7 Sn, ± Zn, ± W, ± F, ± Cu, ± In, ± Au a2 a7 b Ag, Pb, Zn, ± Cu, ± Sn, ± In 12 c a3 a6 11 Sb, Ag, ± Au, ± Pb, ± Zn, ± Mo a4 d e 80000 80000 Bi, Co, Ni, U, ± Ag a5 g f 55 55 Adorf 8 j1 1 j2 Cu, ± Co, ± Au, ± Sb h i1 1a j3 i4 Baryte, Fluorite k1 Project: Prediction of Strategic High Technology m3 m2 m4 k2 i3 i2 Metals in the Erzgebirge (WISTAMERZ) 6 p l1 13 o2 m1 - Arsenic in stream sediments - o1 k3 10 q o3 m5 l2 v1 n1 v2 r1 n2 9 s 2 n3 3 Main Geological Units w r2 x t Cretaceous and Tertiary rocks z y u Permo-Carboniferous sediments FKZ: 033R133A Date: May 2019 a1 - Freiberg north district, a2 - Felsite zone, a3 - Langenstriegis, Upper Carboniferous igneous rocks 4 a4 - Oberschöna, a5 - Freiberg central district & Brand-E., a6 - Mulden- Devonian sediments and volcanics hütten, a7 - Halsbrücke, b - Mohorn, c - Edle Krone - Klingenberg, Map compilation A. Barth, St. Schaefer, E. Kallmeier, 5 Ordovician metapelites, metacarbonates and gneisses d - Dippoldiswalde, e - Schlottwitz, f - Berggießhübel, g - Sadisdorf, P. Bock, C. Legler h - Frauenstein, i1 - Altenberg, i2 - Zinnwald-Cinovec, i3 - Moldava, Ordovician to Silurian pelites and psammites i4 - Rehefeld, j1 - Grünberg, j2 - Augustusburg, j3 - Zschopau Cartography & Layout St. Schaefer, C. Repper Cambrian to Ordovician metasediments k1 - Lengefeld, k2 - Marienberg - Wolkenstein, k3 - Pobershau, l1 - Seiffen, l2 - St. Katharinaberg, Neoproterozoic and Lower Paleozoic gneisses m1 - Geyer, m2 - Hormersdorf, m3 - Thum, m4 - Ehrenfriedersdorf, m5 - Annaberg-B., n1 - Lauter- Map projection Transverse mercator (UTM Zone 33N) Elterlein, n2 - Westerzgebirge complex deposit, n3 - Niederschlag-Bärenstein, o1 - Aue-Bärengrund, 1 – Altenberg-Teplice-Caldera (incl. 1a - Schellerhau granite), 2 – Bergen Pluton 3 – Eibenstock Pluton, o2 - Bad Schlema-Alberoda, o3 - Schneeberg, p - Neumark (U), q - Pechtelsgrün, r1 - Sn Deposits of Reference system Spheroid: GRS 1989 4 – Eichigt Pluton (concealed), 5 – Fichtelgebirge Pluton, 6 – Flöha Fault Zone, 7 – Frankenberg Crystalline the Eibenstock Granite, r2 - Gottesberg-Mühlleiten, s - Johanngeorgenstadt, t - Brunndöbra & Datum: D_ETRS_1989 Complex, 8 – Markersbach Pluton, 9 – Gera-Jachymov Fault Zone, 10 – Kirchberg Pluton, 11 – Niederbobritzsch Schneckenstein, u - Klingenthal-Kraslice, v1 - Zobes, v2 - Bergen, w - Tirpersdorf, x - Oelsnitz, Pluton, 12 – Tharandt Volcanic Complex, 13 – Lößnitz-Zwönitz Syncline y - Schönbrunn, z - Wiedersberg ISBN 978-3-948423-02-5 31 0000 35 0000 39 0000 43 0000.