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Granite Gabbro Gravimetry Heavy minerals Hydrothemal fluid Igneous Industrial mineral Magma Magnetic prospecting Magnetic lineament Magnetite Metalliferous Mica Mineral deposit Mining A holocrystalline quartz-bearing, plutonic rock. Quartz makes up 10 to 50 percentage of the minerals in a granite. A basic, generally dark-colored igneous rock mainly composed of pyroxene and/or amphibole and feldspars like labradorite or bytownite. The measurement of gravity or gravitational acceleration, especially as used in geophysics. Minerals with a density more than 2.95 g/cm 3 . Heavy minerals are used in certain geochemical surveys and as a geochemical exploration method. Hot (> 375°C) aqueous fluid of metamorphic, magmatic or geothermal origin. Certain ores are formed by hydrothermal processes. Said of a rock or mineral that solified from molten material, i.e. from a magma. A rock or mineral that is economically mineble. It can be used directly or in an insdustrial process. Molten rock-matter together with dissolved gas and vapour. Magmatic rock is a rock originating from a magma. A technique of applied geophysics: a survey is made with a magnetometer, on the ground or in the air, which yields local variations, or anomalies, in magnetic-field intensity. A linear structure which can be seen on a magnetic map, either high magnetic or low magnetic in relation to the surrounding. A common iron-oxide mineral (Fe 3 O 4 ). Important mineral for extraction of iron. Metal-bearing. A group of silicate minerals which split into thin elastic laminae and range from colorless to black. Mica is commonly found in granites. A mass of naturally occurring mineral material, e.g. metals ores or nonmetallic minerals, ususlly of economic value without regard to mode of origin. The process of extracting metallic or nonmetallic mineral deposits from the earth. Molybdenite The most common molybdenum-bearing mineral (MoS 2 ). Monazite Moraine A mineral containing rare earth metals. A Quaternary deposit, chiefly till, deposited by direct action of glacier ice. 52
Paleozoic Panning Pegmatite Pentlandite Phanerozoic Plutonic rock Postglacial ppm Precambrian Precious metals Prospecting An era of geologic time from about 570 to 255 million years ago. A technique for prospecting for heavy minerals, e.g. gold, by washing placer or till material in a pan. A coarse-garined igneous rock usually found as dykes, lenses or veins. The composition of pegmatites is generally that of granite. A nickel iron sulphide mineral. Pentlandite is the principal ore of nickel. That part of geologic time represented by rocks in which the evidence of life is abundant. A rock formed by considerable depth in the Earth by crystallisation of magma and/or by chemical alteration. Granite is a typical holocrystalline, quartz-bearing plutonic rock. Formed after a glacial period. parts per million. Unit of concentration, for example the metal content in a rock or soil. All geologic time, and its corresponding rocks, before the beginning of the Paleozoic (cf Paleozoic). Silver, gold and the platinum group of elements. Searching for economically valuable deposits of ore. Synonymous term: exploration. Pyrite A common iron sulphide mineral (FeS 2 ). Quarry Open workings, usually for the extraction of stone. Quartz Crystalline silica, a common rock-forming mineral (SiO 2 ). Quaternary Rare earths Scheelite SDM Seismic prospecting Silica Spectrometry A geological period that began three million years ago and that extends to the present. Oxides of a series of fifteen metallic elements, from lanthanum (La) to luthenium (Lu). A wolfram-bearing mineral (CaWO 4 ). Important mineral for extraction of wolfram. Scheelite is an ore of wolfram. Site Descriptive Model. Term used by <strong>SKB</strong> in site investigation studies. The use of artifically seismic waves in the search for economic deposits (salt, oil, water, ores), or in engineering studies. Silicon dioxide (SiO 2 ). A common mineralogical form: quartz. See gamma ray spectrometry. 53
Page 1 and 2: R-04-72 The potential for ore, indu
Page 3 and 4: Summary On behalf of Svensk Kärnbr
Page 5 and 6: Contents 1 Introduction 7 1.1 Backg
Page 7 and 8: Figure 1-1. Location of the Simpeva
Page 9 and 10: Geophysical information in this stu
Page 11 and 12: 3 Overview of ore geology 3.1 Prosp
Page 13 and 14: 3.3 The Simpevarp area in a regiona
Page 15 and 16: 4 Compilation of geological informa
Page 17 and 18: of geophysical and topographic data
Page 19 and 20: Figure 4-2. The Kråkemåla stone q
Page 21 and 22: Figure 4-3. Mineral resource map of
Page 23 and 24: Figure 4-4. Known deposits of iron
Page 25 and 26: The helicopter-borne survey was int
Page 27 and 28: Figure 5-3. Maps showing geophysica
Page 29 and 30: 5.2 Features of possible exploratio
Page 31 and 32: Possible sub-intrusions of the Göt
Page 33 and 34: were further analysed with the ICP-
Page 35 and 36: 6.5 Visualization of the geochemica
Page 37 and 38: Figure 6-4. 40
Page 39 and 40: 6.8 Conclusions regarding the geoch
Page 41 and 42: 7 Exploration potential in the Simp
Page 43 and 44: Kornfält K-A, Persson P-O, Wikman
Page 45: Glossary of terms Aggregate Aplite

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