Results 101 to 110 of about 19,501 (234)
A mineral reconnaissance survey of the Abington-Biggar-Moffat-area, south-central Scotland [PDF]
, 1979 Panned heavy mineral concentrates, mostly obtained from stream sediments, were collected from 195 sites in the Abington-Biggar-Moffat area. The project area, which lies immediately east of the formerly important mining district of Wanlockhead ...
Dawson, J., Floyd, J.D., Phillip, P.R.
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Geochemical Study of the My Duc Pb-Zn Deposits in Vietnam [PDF]
Geo DataThis study presents a comprehensive geochemical investigation of the undeveloped Pb-Zn mineral deposits in the My Duc area of Quang Binh Province, central Vietnam.
Injoon Kim, Hong-Jin Lee
doaj +1 more source
Descriptive Mineralogy of Pugh Quarry, Northwestern Ohio: Sphalerite [PDF]
, 1978 Author Institution: Department of Geology, Miami UniversityThe Devonian rocks at Pugh Quarry have three distinct types of sphalerite (banded massive, spheroidal, and tiny euhedral). Occurrence of the banded massive sphalerite is restricted to the mineral
Chang, Luke L. Y., Parr, David F.
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Yankuang ceshi, 2014 Up to the present, main research of Ge isotopes has been carried out on organic, magmatic and meteoritic samples. Pb-Zn deposits are one of the most important reservoirs of Ge; however, there are few studies on Ge isotopes for these samples.
ZHU Chuan-wei +6 more
doaj +2 more sources
Flotation of Sulphide Minerals Using Organosolv Lignin as Collector—Pilot-Scale Trials
Materials ProceedingsThe use of toxic chemicals as flotation reagents raises concerns about the sustainability of the process and its environmental impact. Xanthates are a family of efficient collectors that find application in the selective recovery of lead, gold and zinc ...
Panagiotis M. Angelopoulos +8 more
doaj +1 more source
Characterisation of gold from Fiji [PDF]
, 1995 This is a study of the variation in chemistry and inclusion mineralogy of bedrock and placer gold from Fiji. It forms part of a large project, undertaking gold characterisation from a wide range of geological environments in Ecuador, Zimbabwe ...
Henney, P.J., Naden, Jon
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Frontiers in Earth ScienceImportant Mid-Late Jurassic Pb–Zn polymetallic skarn deposits are widely distributed in South China, yet physiochemical conditions and migration of the ore-forming fluids in skarn deposits are poorly constrained. The Dafang Pb–Zn–Au–Ag deposit (38 kt Pb @
Wusheng Wang +6 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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Frontiers in Earth ScienceThe recently discovered large Luobugaizi Pb-Zn deposit, located at the junction of the South Pamir and Karakoram Mountains, is a key component of the West Kunlun–Karakoram Pb-Zn Metallogenic Belt.
Rui-Hong Huang +3 more
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OXIDATIVE AMMONIA LEACHING OF SPHALERITE CONCENTRATE
Selçuk Üniversitesi Mühendislik, Bilim ve Teknoloji Dergisi, 2005 This paper presents a study of kinetics of leaching of sphalerite concentrate in ammoniasolutions. The effects of ammonia concentration, oxygen partial pressure, reaction temperature andparticle size on the leaching rate were investigated. The shrinking core model was applied to the resultsobtained from these experiments. Reaction on order with respect
AYDOĞAN, Salih +2 more
openaire +4 more sources