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; P. DOBEŠ; Karel MALÝ a Radek ŠKODA

Vydání

Acta Musei Moraviae, Scientiae geologicae, Brno, 2008, 1211-8796

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Další údaje

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

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/08:00036848

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

bornite; chalcocite; covellite; millerite; parkerite; wittichenite

Příznaky

Mezinárodní význam, Recenzováno

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Anotace

V originále

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.

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.