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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Canada
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Cassiar Mountains (1)
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Eastern Canada
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Newfoundland and Labrador
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Newfoundland (1)
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Ontario
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Europe
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metamorphic rocks
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nesosilicates
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sheet silicates
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chlorite group
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clinochlore (2)
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clay minerals
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mica group
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muscovite (1)
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serpentine group
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antigorite (8)
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chrysotile (9)
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lizardite (14)
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serpentine (5)
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Primary terms
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asbestos deposits (1)
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associations (1)
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Canada
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Cassiar Mountains (1)
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Eastern Canada
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Newfoundland and Labrador
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Newfoundland (1)
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Ontario
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Cochrane District Ontario
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Timmins Ontario (1)
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carbon
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C-13/C-12 (1)
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clay mineralogy (1)
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Europe
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Western Europe
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United Kingdom
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England
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Cornwall England (4)
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geochemistry (1)
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hydrogen
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D/H (2)
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deuterium (1)
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igneous rocks
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plutonic rocks
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ultramafics (1)
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volcanic rocks
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rhyolites (1)
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inclusions
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fluid inclusions (1)
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isotopes
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stable isotopes
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C-13/C-12 (1)
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D/H (2)
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deuterium (1)
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O-18 (1)
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O-18/O-16 (1)
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metal ores
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copper ores (1)
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lead ores (1)
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silver ores (1)
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zinc ores (1)
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metals
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aluminum (1)
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rare earths (1)
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metamorphic rocks
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metaigneous rocks
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serpentinite (4)
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metasomatic rocks
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serpentinite (4)
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metamorphism (1)
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metasomatism (6)
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mineral deposits, genesis (1)
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mineralogy (5)
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minerals (9)
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North America
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Canadian Shield
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Superior Province
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Abitibi Belt (2)
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oxygen
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O-18 (1)
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O-18/O-16 (1)
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paragenesis (3)
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petrology (1)
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phase equilibria (2)
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Precambrian
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Archean (1)
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sea water (1)
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symposia (2)
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The crystal structure of Mg end-member lizardite-1 T forming polyhedral spheres from the Lizard, Cornwall
A disc with fivefold symmetry: the proposed fundamental seed structure for the formation of chrysotile asbestos fibres, polygonal serpentine fibres and polyhedral lizardite spheres
Polyhedral serpentine: a spherical analogue of polygonal serpentine?
The significance of the aluminium content of a lizardite at the nanoscale: the role of clinochlore as an aluminium sink
Proceedings
Proceedings
The origin of fluids associated with serpentinization; evidence from stable-isotope compositions
Evidence for atomic-scale resolution in atomic-force microscope of layer silicates
Carbonate and associated alteration of ultramafic and rhyolitic rocks at the Hemingway Property, Kidd Creek volcanic complex, Timmins, Ontario
Imaging the internal atomic structure of layer silicates using the atomic force microscope
Imaging the hydroxyl surface of lizardite at atomic resolution with the atomic force microscope
Report of the Clay Minerals Society Nomenclature Committee; Revised classification of clay materials
Abstract The combined techniques of vacuum thermogravimetric analysis (TGA) and evolved gas analysis (EGA) by mass spectrometry (MS) can be productive tools for mineral studies. In its simplest configuration, a TGA-EGA system correlates quantitative thermal weight-loss with semiquantitative evolved gas data. Thus, each weight-loss event can be assigned to the volatile species identified in that temperature interval. More sophisticated systems are capable of quantitative EGA data, with volatile abundances determined directly by integration of evolved gas peaks and verified with TGA measurements. Alternatively, the ratio of evolved gases may be used to apportion weight losses. The vacuum TGA-EGA results from cyanotrichite, Cu 4 Al 2 (SO 4 )(OH) 12 .2H 2 O , illustrate the importance and power of the combined technique. Even the small size sample (1.18 mg) used in this experiment produces good thermogravimetric information (Figure 1) because the losses during heating are relatively large. The TGA curve consists of five distinct weight-loss steps plus minor inflections that suggest further complexities. Except for assuming that H 2 O will be lost at a lower temperature than OH, such a curve is impossible to interpret with any certainty without further information. The EGA curves (Figure 1) provide this information. The curves of ionized waterl , H 2 O + , and one of its fragments, O + , which peak at 61°C, indicate that the first weight-loss event is due to the loss of H20. Similarly, the second two events, which peak at 168°C and 308°C, represent the evolution of H 2 O during dehydroxylation of the mineral. The sensitivity of the instrument is demonstrated by the detection