Origin and distribution of mineral species in limestone caves [PDF]
, 1971 More than 80 mineral species are known to result from secondary chemical reactions in solutional limestone caverns. These minerals are transitional and end-products of carbonate wall rock interactions with ground water and organic residue.
Broughton, Paul L.
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Potential for stratiform base-metal sulphides in SW England [PDF]
, 2004 The British Geological Survey (BGS) has recently re-evaluated the potential for stratiform base-metal sulphide mineralisation in Devon and east Cornwall (Rollin et al., 2001) (Figure 1). On the basis of their stratigraphy and tectonic setting the Lower
Benham, A.J. +3 more
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Pornography and Committed Relationships: How Pre-existing Factors within a Dyad Change the Effect of Pornography on Heterosexual and Homosexual Couples [PDF]
, 2017 Pornography and its effects have been the topic of debate for decades now. Much of the pornography debate centers on whether or not male pornography consumption is detrimental to men’s perception of, communication with, and treatment of women.
Gingrich, Rachel
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Quantitative leaching of galena
Bulletin of the Chemical Society of Ethiopia, 2000 Abstract (Received September 25, 1999; revised January 19, 2000) Experiments on the quantitative leaching of lead from galena in hydrochloric acid solutions are reported. The effects of contact time, acid concentration, number of leaching stages, solid to liquid ratio, particle size, temperature, and stirring speed, on the leaching reaction are ...
openaire +4 more sources
Performance of Indigenous and Introduced Slender Wheatgrass in Alaska, and Presumed Evidence of Ecotypic Evolution [PDF]
, 1991 Objectives of this study were to evaluate forage and seed production, winter hardiness, and stand longevity of several collections of native Alaskan slender wheatgrass (Agropyron trachycaulum (Link) Malte), and to compare their performance with ...
Klebesadel, Leslie J.
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Estudio termodinámico sobre la mineralogénesis de la Galena en la Mina de Cierco (Alta Ribagorza) [PDF]
, 1985 Se efectha un estudio de la mineralogénesis de la galena en la mina de Cierco (Alta Riborgaza). Se determina a partir de cálculos termodinamicos la solubilidad de la galena en una solución hidrotermal a 150°C y 3 molal de NaCl y se estudian los efectos ...
Sandiumenge, F., Solans, X.
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Exploration for volcanogenic sulphide mineralisation at Benglog, north Wales [PDF]
, 1983 Exploration for volcanogenic sulphide mineralisation around Benglog is one of three investigations designed to assess the metallogenic potential of the Ordovician Aran Volcanic Group.
Allen, P.M. +4 more
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Copper mineral occurrences in the Wrangell Mountains-Prince William Sound area, Alaska [PDF]
, 1971 On January 9, 1970, the U.S. Bureau of Mines entered into an agreement with the University of Alaska based upon a proposal submitted by the Mineral Industry Research Laboratory.
Grybeck, D.G., Heiner, L.E., Wolff, E.N.
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Base metal mineralisation associated with Ordovician shales in south-west Scotland [PDF]
, 1984 Several narrow, lenticular belts of black cherty mudstone and siltstone (the Moffat Shales), alternating with thick greywacke sequences, strike north-east to south-west across Galloway with uniformly steep dip.
Jones, R.C., Leake, R.C., Stone, P.
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Infrared spectra of some sulfides and their analogs of binary composition in the long-wave region [PDF]
The far infrared spectra (500-60/cm) of some simple sulfides and their analogs were studied. In all, 22 minerals with different structure types were investigated, out of which 14 are sulfides (galena, alabandite, pyrrhotite, sphalerite, wurtzite ...
Povarennykh, A. S. +3 more
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