31 0000 35 0000 39 0000 43 0000 60000 60000 Project partners: 56 56 Geochemical Atlas – Erzgebirge and Vogtland

Gold in stream sediments

The maximum gold (Au) concentration is about the boundary of the study area. To the SW, the 1 mg/kg. Minima are below the detection limit of Augustusburg and Grünberg fluorite-baryte deposits Hainichen 0.0005 mg/kg. The ratio between arithmetic average coincide with an auriferous area and so do the (0,004 mg/kg) and median (0,001 mg/kg) is high. BiCoNi districts of Johanngeorgenstadt and The histogram shows a right-skewed log Schneeberg. Isolated spots in the e astern Project supported by: distribution. Besides the large number of very low Erzgebirge correspond to an Au-bearing q uartzite values, a group of slightly higher values near NW of the Frauenstein Ag deposit, to an area SW of 0.003 mg/kg is evident, whereas less than 1% of the the Berggießhübel Fe skarns, to the districts of Freiberg values exceed 0.006 mg/kg. In the Vogtland region Sadisdorf and , and to an area SW of Sayda. west of the and Kirchberg granites, the In the Western Erzgebirge, Cambroordovician meta- Dippoldiswalde last mentioned concentration occurs along a N-S sediments SW of show elevated Au. Low trending, east-concave arc in Cambrian to Silurian grade areas (Au > 0.002 mg/kg) reveal structures metasediments, coinciding with the U deposits of such as an E-W striking belt between the Neumark, Bergen and Schneckenstein. Areas with deposit and the Schellerhau granite. Further, Au Au > 0.004 mg/kg occur in the Freiberg district appears in numerous small spots relating to related to polymetallic vein mineralisation togethe r individual samples. with Ag. To the NW, this zone extends beyond the Freiberg district and beyond its Ag anomaly, up to

Altenberg Zschopau

Stollberg Sayda 20000 20000 Scale: 1 : 400,000 56 56 Localities Kilometres 05 10 20 River Analysed fraction: < 0.18 mm Marienberg Analysed by: ALS Minerals D / CZ Analytical method: Au-ICP22 Kirchberg (Au 50g FA Major fault ICP-AES finish) Gold Schneeberg [mg / kg] ¯ Annaberg-Buchholz < 0.001 Schwarzenberg 0.0010 - 0.0013 0.0013 - 0.0016 0.0016 - 0.0020 0.0020 - 0.0025 Bergen 0.0025 - 0.0032 0.0032 - 0.0040 0.0040 - 0.0050 Oelsnitz Number of samples: 4732 Min: < 0.0005 mg/kg 0.0050 - 0.0063 Important Mineral Occurrences Max: 0.97 mg/kg W, ± Mo Arithmetic Mean: 0.004 mg/kg 0.0063 - 0.0080 Sn, ± W, ± Cu, ± F, ± Li, ± Rb, ± Bi Geometric Mean: 0.002 mg/kg a1 Median: 0.001 mg/kg 0.0080 - 0.01 7 Sn, ± Zn, ± W, ± F, ± Cu, ± In, ± Au a2 a7 b Ag, Pb, Zn, ± Cu, ± Sn, ± In > 0.01 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 - Gold 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 - , k3 - Pobershau, l1 - Seiffen, l2 - St. Katharinaberg, Neoproterozoic and Lower Paleozoic gneisses m1 - , m2 - Hormersdorf, m3 - , m4 - , m5 - Annaberg-B., n1 - Lauter- Map projection Transverse mercator (UTM Zone 33N) , n2 - Westerzgebirge complex deposit, n3 - Niederschlag-Bärenstein, o1 - -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 – 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 - -Kraslice, v1 - Zobes, v2 - Bergen, w - Tirpersdorf, x - Oelsnitz, Pluton, 12 – Tharandt Volcanic Complex, 13 – Lößnitz-Zwönitz Syncline y - Schönbrunn, z - Wiedersberg ISBN 978-3-948423-03-2

31 0000 35 0000 39 0000 43 0000