Manganiferous pyroxenes and pyroxenoids from three Pb-Zn-Cu skarn deposits

Abrecht, J.

doi:10.1007/bf00381559

Cited by 17 publications

(10 citation statements)

References 15 publications

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“…The Mn-rich mineralogy is characteristic of the Pb-Zn skarn deposits placed distal from a magmatic source (e.g., Einaudi et al, 1981;Abrecht, 1985;Logan, 2000;Vassileva and Bonev, 2001;Vassileva et al, 2005;Meinert et al, 2005;Canet et al, 2009) and reflects remobilization of Mn from the country rocks. The principal prograde mineral is hedenbergite enriched in Mn.…”

Section: Discussionmentioning

confidence: 99%

“…Figure 10 presents the ternary proportion of their diopside-johannsenite-hedenbergite components. The manganese-rich mineralogy is typical for Pb-Zn skarn deposits distal from intrusions (e.g., Einaudi et al, 1981;Abrecht, 1985;Logan, 2000;Vassileva and Bonev, 2001;Vassileva et al, 2005;Canet et al, 2009). Diopside and johannsenite contents vary up to 45 and 10 mol %, respectively.…”

Section: Compositions Of Skarn and Ore Mineralsmentioning

confidence: 99%

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Age- and sex-associated modification of plasma melatonin concentrations in man. Relationship to pathology, malignant or not, and autopsy findings

Touitou

Fèvre‐Montange

Proust

et al. 1985

Acta Endocrinologica

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Abstract. Plasma melatonin concentrations were determined in 757 unselected elderly patients aged 80.9 ± 9.7 years. The daytime (8–9.30 h) plasma levels of melatonin were in the so-called normal range in only one third of the population whereas 65% of the subjects had abnormal levels of the hormone, most often decreased i.e. less than 0.17 nmol/l (53%) and sometimes increased i.e. 0.43 nmol/l or higher (12%). A control group of healthy elderly subjects showed the same distribution as the entire population. A sex-difference with significantly higher levels of plasma melatonin in elderly women was observed. With respect to pathology and autopsy findings high levels of the hormone correlated with cancer, chronic renal failure, cardiovascular disease, biological inflammatory syndrome and diabetes. Low levels correlated with neurologic disease, tobacco or alcohol addiction. However, some of these relations were found to be sex-related as they were observed in women but not in men. Our data indicate that pineal function seems to be often altered in elderly human subjects and suggest potential diagnostic applications of melatonin determination.

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Section: Discussionmentioning

confidence: 99%

Section: Compositions Of Skarn and Ore Mineralsmentioning

confidence: 99%

Age- and sex-associated modification of plasma melatonin concentrations in man. Relationship to pathology, malignant or not, and autopsy findings

Touitou

Fèvre‐Montange

Proust

et al. 1985

Acta Endocrinologica

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“…The compositions of the clinopyroxene are expressed in terms of mole fractions of the three end members, i.e., hedenbergite (Hd), johannsenite (Joh), and diopside (Di) as there is no miscibility gap between hedenbergite-diopside on one side and johannsenite on the other (Abrecht, 1985). The chemical data of all analyzed clinopyroxenes are plotted together and cluster into three different areas within the diopside-hedenbergite-johannsenite ternary plot (Fig.…”

Section: Chemical Compositions Of Garnet and Clinopyroxenementioning

confidence: 99%

Chemical compositions of garnet and clinopyroxene and their genetic significances in Yemaquan skarn iron–copper–zinc deposit, Qimantagh, eastern Kunlun

Zuo

Liu

Jiang

et al. 2015

Journal of Geochemical Exploration

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“…Diopside and johannsenite contents vary up to 45 and 10 mol %, respectively. The manganese-rich mineralogy is typical for Pb-Zn skarn deposits distal from intrusions (e.g., Einaudi et al, 1981;Abrecht, 1985;Logan, 2000;Vassileva and Bonev, 2001;Vassileva et al, 2005;Canet et al, 2009).…”

Section: Compositions Of Skarn and Ore Mineralsmentioning

confidence: 99%

Metallogenic Model of the Trepča Pb-Zn-Ag Skarn Deposit, Kosovo: Evidence from Fluid Inclusions, Rare Earth Elements, and Stable Isotope Data

Palinkaš¹,

Palinkaš²,

Renac³

et al. 2013

Economic Geology

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The most productive mines are Trepča (Stari Trg), Crnac, Belo Brdo, Kišnica, Avajlija, and Novo Brdo with total past production of 60.5 million metric tons (Mt) of ore at 8% Pb + Zn and more than 4,500 t of Ag. Their formation is related to Tertiary postcollisional magmatism in the western Vardar zone (Cvetković et al., 2004; Borojević Šoštarić et al., 2011). Mining in the area began during the Middle Ages, while industrial production started with the formation of Trepča Mines Limited in 1927. Production was maintained during the Second World War, and then continued until 1999 under state ownership. Between 2000 and 2008 the Trepcˇa deposit was administered by the United Nations Mission in Kosovo (UNMIK). The deposit exploitation started again in 2008

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Manganiferous pyroxenes and pyroxenoids from three Pb-Zn-Cu skarn deposits

Cited by 17 publications

References 15 publications

Age- and sex-associated modification of plasma melatonin concentrations in man. Relationship to pathology, malignant or not, and autopsy findings

Age- and sex-associated modification of plasma melatonin concentrations in man. Relationship to pathology, malignant or not, and autopsy findings

Chemical compositions of garnet and clinopyroxene and their genetic significances in Yemaquan skarn iron–copper–zinc deposit, Qimantagh, eastern Kunlun

Metallogenic Model of the Trepča Pb-Zn-Ag Skarn Deposit, Kosovo: Evidence from Fluid Inclusions, Rare Earth Elements, and Stable Isotope Data

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