A5053846476- Geological and Geochemical Analysis
- Clay minerals and soil interactions
- Hydrocarbon exploration and reservoir analysis
- Coal and Its By-products
- Geochemistry and Geologic Mapping
- Coal Properties and Utilization
- High-pressure geophysics and materials
- earthquake and tectonic studies
- Crystal Structures and Properties
- Mineralogy and Gemology Studies
- Geological formations and processes
- Paleontology and Stratigraphy of Fossils
- Maritime and Coastal Archaeology
- Soil and Unsaturated Flow
- Coal and Coke Industries Research
- Archaeology and ancient environmental studies
- Geomagnetism and Paleomagnetism Studies
- Iron oxide chemistry and applications
- Carbon Dioxide Capture Technologies
- Geological Modeling and Analysis
- Scientific Research and Discoveries
- Geological Studies and Exploration
- Inorganic Chemistry and Materials
- Geological and Geophysical Studies
- Geotechnical and Geomechanical Engineering
Ben-Gurion University of the Negev
1994-2018
Rijksmuseum
1969
Leiden University
1969
Commonwealth Scientific and Industrial Research Organisation
1966
Abstract The International Mineralogical Association's approved amphibole nomenclature has been revised in order to simplify it, make it more consistent with divisions generally at 50%, define prefixes and modifiers precisely include new species discovered named since 1978, when the previous scheme was approved. same reference axes form basis of most names are little changed but compound like tremolitic hornblende (now magnesiohornblende) abolished also crossite glaucophane or...
Abstract The introduction of a fifth amphibole group, the Na-Ca-Mg-Fe-Mn-Li defined by 0.50 < B (M g ,Fe 2+ ,Mn ,Li) 1.50 and ≤ (Ca,Na) a.f.p.u. (atoms per formula unit), with members whittakerite ottoliniite, has been required recent discoveries (LiNa) amphiboles. This, other new discoveries, such as sodicpedrizite (which, here, is changed slightly, but significantly, from original idealized formula), necessitate amendments to IMA 1997 definitions M -Fe-Mn-Li, calcic, sodic-calcic sodic...
The introduction of a fifth group amphiboles, the Na–Ca–Mg–Fe–Mn–Li group, defined by 0.50 < B(Mg,Fe2+,Mn2+,Li) 1.50 and ≤ B(Ca,Na) atoms per formula unit, with members whittakerite ottoliniite, has been required recent discoveries B(Li,Na) amphiboles. These, other new discoveries, such as sodicpedrizite (which is herein slightly, but significantly, changed from original idealized formula), necessitate amendments to IMA 1997 definitions Mg–Fe–Mn–Li, calcic, sodic-calcic sodic groups....
Instrumental settings for determination of illite/muscovite ‘crystallinity’(half‐height width the 10‐Å X‐ray diffraction peak) and limits anchimetamorphic zone adopted by various authors fall into several groups. The variation in limiting peak widths between that have Kubler's Neuchâtel boundary values 0.42° 0.25°Δ2θ can be interpreted terms instrumental settings. choice time constants higher than those given formula causes broadening; this effect is particularly marked at high scan rates....
The degree of incipient metamorphism in the Cambro-Silurian Jåmtland Supergroup (Eastern Complex) Jämtland Caledonides, from Caledonian front autochthon westwards through parautochthon towards thrust metamorphic main ('Western Complex') nappes, has been studied using: ( a ) determination illite crystallinity by X-ray powder diffraction on K- and Mg-saturated –2 μm fractions; low-grade limits anchizone 'opizone' Kubler correspond to peak widths c. 0.38° 0.21°Δ2 (illite 001 peak) under...
A thin sill-like body, probably andesitic, intrudes a coal seam within the Collinsville measures (Permian) of Bowen basin, eastern Queensland, and is altered to albite, kaolinite, chalcedony, ankerite, siderite, calcite, leucoxene. Textural relations suggest that it was partly crystalline when intruded. The converted coke at contact, coal, made plastic up two feet from injected intrusive along cracks. Liquid tarry products were carbonized formed masses small spheres 1-200 microns in...
Research Article| July 01, 1991 Open-system, constant-volume development of slaty cleavage, and strain-induced replacement reactions in the Martinsburg Formation, Lehigh Gap, Pennsylvania R. P. WINTSCH; WINTSCH 1Department Geology, Indiana University, Bloomington, 47405 Search for other works by this author on: GSW Google Scholar C. M. KVALE; KVALE H. J. KISCH 2Department Geology Mineralogy, Ben-Gurion University Negev, P.O. Box 653, Beer-Sheva, 84120, Israel Author Article Information...
The sill is an analcine basanite with phenocrysts of labradorite, two clinopyroxenes, and olivine. coal from a bore drilled in the Dirty seam Baralaba Coal Measures Bowen Basin, Queensland. intrusive rock was penetrated 1514 to 1532 /sup 1///sub 2/ ft depth, directly below seam. narrow chilled margins indicate temperature intrusion not more than 1160/sup 0/C. metamorphosed semi-anthracite (92% C) anthracite, meta-anthracite (97% C), vesicular natural coke towards contact. vitrinite shows...
Crystals of dioctahedral illite and chlorite occur in tonsteins associated with upper Permian coals semi-anthracite rank the Bowen basin, Queensland, whereas kaolinite is absent. It inferred that were formed by replacement kaolinite. Some minor (2M), twinned albite, detrital origin are also present. The chlorite-dioctahedral assemblage related to coals. Persistence other high-rank ascribed compositional factors.
Abstract Diagnostic analcime-, heulandite-, and laumontite-bearing mineral assemblages from four areas in the Upper Carboniferous Permian of New South Wales have been correlated with rank associated coals, represented by carbon content vitrinite. The coals are high-volatile bituminous to semi-anthracitic; their vitrinites contain about 82 per cent up an estimated 91 carbon. Analcime-quartz is found lower-rank, laumontite-rich higher-rank coals. Comparison a similar correlation Northern...
Abstract Coal rank (vitrinite reflectance) and clay mineralogy from the North Range Group of Southland Syncline, illite crystallinity in pumpellyite- lawsonite-bearing terranes textural zone I Caples Torlesse were studied. Vitrinite reflectances range 0.60 to 1.33% Rm oil (high-volatile C medium-volatile bituminous coal ranks) 31 out 34 samples studied; lower 2 units are higher than 0.81% A ranks). This conforms earlier extrapolations at least low-volatile expected be associated with...