Rudní minerály dolomitovych žil v hadcích letovického krystalinika

FOJT, Bohuslav, P. DOBEŠ, Karel MALÝ a Radek ŠKODA. Rudní minerály dolomitovych žil v hadcích letovického krystalinika. Acta Musei Moraviae, Scientiae geologicae. Brno, 2008, roč. 93, ?, s. 3-18. ISSN 1211-8796.

Základní údaje

• Originální název: Rudní minerály dolomitovych žil v hadcích letovického krystalinika
• Název anglicky: Ore minerals from the dolomitic veins in the serpentinite rocks of the Letovice crystalline complex (Czech Republic)
• Autoři: FOJT, Bohuslav (203 Česká republika, garant), P. DOBEŠ (203 Česká republika), Karel MALÝ (203 Česká republika) a Radek ŠKODA (203 Česká republika).
• Vydání: Acta Musei Moraviae, Scientiae geologicae, Brno, 2008, 1211-8796.

Další údaje

• Originální jazyk: čeština
• Typ výsledku: Článek v odborném periodiku
• Obor: 10500 1.5. Earth and related environmental sciences
• Stát vydavatele: Česká republika
• Utajení: není předmětem státního či obchodního tajemství
• Kód RIV: RIV/00216224:14310/08:00036848
• Organizační jednotka: Přírodovědecká fakulta
• Klíčová slova anglicky: bornite; chalcocite; covellite; millerite; parkerite; wittichenite
• Příznaky: Mezinárodní význam, Recenzováno

Anotace

Minerals found in dolomite veins cutting serpentine rocks around Letovice and its surroundings composed remarkably heterogeneous set which is different from any other locality in the Bohemian Massif. The composition of copper minerals (bornite, chalcocite, covellite, chalcopyrite), millerite, dolomite veins and magnetite is similar to the composition of their host ultrabasic rocks. Lead and bismuth (galena, native Bi) are considered in this environment as atypical. Parkerite and wittichenite are transitional . they consist of elements of both groups. Despite being impossible to determine detailed order of crystallization, it was implied by microscopic studies that sulphides Pb-Bi(Cu) are relatively older than copper minerals. Fe-Cr spinelides that are rarely found in dolomite veins on the outline of serpentine rock are possibly relicts of premetamorphic magmatic stage. The formation of "gribbon-like" pure magnetite in the immediate vicinity of sulphides is probably related to redeposition processes of older stages in process of hydrothermal alteration. Chondrite normalized REE pattern of dolomite shows positive Eu anomaly and MREE depletion.

Anotace anglicky

Minerals found in dolomite veins cutting serpentine rocks around Letovice and its surroundings composed remarkably heterogeneous set which is different from any other locality in the Bohemian Massif. The composition of copper minerals (bornite, chalcocite, covellite, chalcopyrite), millerite, dolomite veins and magnetite is similar to the composition of their host ultrabasic rocks. Lead and bismuth (galena, native Bi) are considered in this environment as atypical. Parkerite and wittichenite are transitional . they consist of elements of both groups. Despite being impossible to determine detailed order of crystallization, it was implied by microscopic studies that sulphides Pb-Bi(Cu) are relatively older than copper minerals. Fe-Cr spinelides that are rarely found in dolomite veins on the outline of serpentine rock are possibly relicts of premetamorphic magmatic stage. The formation of "gribbon-like" pure magnetite in the immediate vicinity of sulphides is probably related to redeposition processes of older stages in process of hydrothermal alteration. Chondrite normalized REE pattern of dolomite shows positive Eu anomaly and MREE depletion.