Overview of talc resources in the Altermark talc province, Northern Norway, and possible uses of the talc ore

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Authors:Karlsen, Tor Arne; Rian, Edvin; Olesen, Odleiv
Author Affiliations:Primary:
Geological Survey of Norway, Trondheim, Norway
Other:
Norwegian Talc Altermark, Norway
Volume Title:Industrial minerals and rocks in Norway
Volume Authors:Cook, Nigel J., editor; Karlsen, Tor Arne; Roberts, David
Source:Industrial minerals and rocks in Norway, edited by Nigel J. Cook, Tor Arne Karlsen and David Roberts. Bulletin - Norges Geologiske Undersokelse, Vol.436, p.93-102. Publisher: Universitetsforlaget, Trondheim - Oslo, Norway. ISSN: 0332-5768
Publication Date:2000
Note:In English. 17 refs.; illus., incl. 2 tables, geol. sketch map
Summary:Active prospecting during the past 10 years has proved that the Altermark area contains much more talc than previously recognised. In the Nakkan-Esjeklumpen area, 10 M tonnes or more of talc-carbonate ore are probably present, distributed in ultramafic bodies. The ore, which occurs as one of several layers within compositionally zoned ultramafic lenses dominated by antigorite serpentinites, has the following general mineralogy: talc (45-65 %), carbonate (30-50%), chlorite (0-4%) and magnetite (0-3 %). Relative to other known similar deposits, the ore is rather coarse-grained, and the minerals tend to be idioblastic. Several products can be made from the talc-carbonate ore. By applying flotation or other kinds of mineral separation techniques, it is likely that high-quality talc-concentrate could be made in addition to talc-carbonate mixtures. A concentrate of by-product breunnerite would possibly be of economic value.
Sections:Economic minerals and ore deposits
Subsections:Non-metallic deposits
Subjects:Beneficiation; Carbonates; Flotation; Igneous rocks; Mineral composition; Mineral exploration; Mining; Nappes; Ophiolite; Petrography; Plutonic rocks; Sheet silicates; Silicates; Talc; Talc deposits; Textures; Tonnage; Ultramafics; Europe; Nordland Norway; Northern Norway; Norway; Scandinavia; Western Europe; Altemark mining district; Mo i Rana Norway; Rodingsfjallet Complex
Coordinates:N633000 N711000 E0310500 E0093000
Abstract Numbers:02M/2625
Record ID:2008106277
Copyright Information:GeoRef, Copyright 2020 American Geosciences Institute.
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