...Linda Lerchbaumer; Andreas Audétat Abstract A specially designed quartz liner effectively prevents alloying problems with noble-metal capsules during hydrothermal experiments at elevated pressures and temperatures. The liner consists of three pieces: a cylindrical container made of a single quartz...

... crystals of relatively pure materials is perhaps best demonstrated by its successful application in the laboratory and commercial production of quartz. (Walker and Buehler, 1950, Hale, 1950, Laudise and Sullivan, 1959, Sawyer, 1959). The fact that one can grow colorless quartz of high purity in steel...

...Patrick R. L. Browne; Sue F. Courtney; C. Peter Wood Abstract Chips ejected during the initial openings of Ngatamariki well, NM2, in the Taupo Volcanic Zone, New Zealand, consist of euhedral crystals of wairakite, prehnite, and Fe-rich epidote, plus rare quartz and pyrite. The shapes of some...

..., mud accumulation is discontinuous due to the undulating nature of the lake bottom. Mud fills the hollows leaving glaciolacustrine clay exposed at the top of the undulations in this region.The surficial sediments contain variable amounts of quartz, clay minerals, organic carbon, and carbonates. Quartz...

... feldspar-rich sandstones to chert-pebble conglomerates. Diagenetic minerals present include calcite, siderite, and quartz overgrowths. Clay minerals present include small to moderate amounts of iron-rich chlorite, mixed-layer clays, and illite. Generally, the diagenetic minerals and the clays tend to fill...

... and efficient landfill liner materials. A series of laboratory investigations was conducted on three residual soil samples by using tap water and leachate as permeation fluid to achieve the objectives of the study. The zeta potential measurements revealed that the presence of multivalent cations in the leachate...

... to wider, deeper cracks. A number of case histories into desiccation of clay beneath a geomembrane in landfill liners have been published both in the United States ( Corser & Cranston 1991 ; Basnett 1993 ) and the United Kingdom ( Hewitt & Philip 1997 ). These case histories have...

...H. Akgün; A.G. Türkmenoğlu; İ. Met; G.P. Yal; M.K. Koçkar Abstract Because of the current need for new landfill sites in Ankara, the suitability of Ankara Clay as a liner material for landfill sites was investigated. A mineralogical and geotechnical database was created by compiling the results...

...Ashraf M. El Maghraby; Ahmed M. El Kammar; Mohamed S. Mabrouk Abstract Engineered landfill liner systems are expensive to install and represent a challenge to several developing countries. Alternatively, native soils, preferentially clays, can be used as cost-effective bottom liners. The purpose...

... sizes (<5 mm to <50 nm), and was unexpectedly categorized as silty clay or silt with a high liquid limit. The continuous gradation and small D 90 value helped the laterite achieve saturated hydraulic conductivities in the range of <10 –6 cm/s required for impoundment liners. The laterite...

... and sand size particles, comprising approximately 50 percent, is composed of calcite, quartz, dolomite, and feldspar. In comparison to hydraulic conductivity studies, there are a limited number of studies in the literature on the effects of solutions on the swelling pressure of compacted clay liners...

... Institutes of Health, to determine the average XCT value per core ( Schneider et al., 2012 ) ( Figure 4 ). Figure 4. Two-dimensional (2-D) x-ray computed tomography (XCT) scan slices from core H005-4FB. (A) Single 2-D slice with center image artifact and core liner. (B) Single 2-D slice with image...

...A. Simoes; A.M. Stringfellow; D. Smallman; R. Beaven; J. Marshall; W. Powrie; H.A.B. Potter Abstract Abstract This study provides an evaluation of the sorption capacity of two contrasting mineral liners or barriers widely used in the UK for a range of organic contaminants of varying hydrophobicity...

..., corrosion of the steel liner led to diffusion of Fe into the bentonite, resulting in the formation of large (width > 140 mm) red, orange, and blue colored halos. Goethite was identified as the main corrosion product in the red and orange zones while no excess Fe 2+ (compared to the unaffected bentonite...

... liners or closure caps as hydraulic barriers depends on the composition and construction of the typical local materials used. This investigation was undertaken to evaluate the effect of leaching on some of the properties of a local calcareous soil. Samples were compacted at different moisture contents...

..., Gwynnedd. [SH620650] Quartz, muscovite, chlorite, albite and pyrite [Cambrian] 2 Weathered Oxford clay Princess Risborough, Buckinghamshire. [SP745074] Quartz, illite, kaolinite, calcite, gypsum with traces of pyrite [Upper Jurassic] 3 Recent alluvial sand Hilton, Derbyshire. [SK238318...

...Z. Gökalp; M. Başaran; O. Uzun Abstract Bentonite mixed with varying quantities of sand is currently of widespread interest as engineering liners for water containment and waste disposal. However, the alternative use of pumice, widespread in many volcanic regions, has been less studied...

...Olanrewaju Aboaba; Christopher Liner Abstract Mississippian paleokarst chat and tripolitic chert (tripolite) zones associated with the Mississippian Lime have been hydrocarbon exploration targets in Osage County for many decades. Chat is residual chert, either in place or transported, weathered out...