Textural and fluid inclusion evidence for ore deposition in the Pb-Zn deposit at Laisvall, Sweden

Lindblom, Sten

doi:10.2113/gsecongeo.81.1.46

Cited by 25 publications

(30 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The ore-forming fluid had a salinity of 24 eq. mass% NaCl and a temperature of 150 °C [47], similar to the LSOD Zn-Pb ores. The prevailing view for the genesis of the sandstone-hosted deposits is that these are related to the reactivation of basement structures during the peak of the Caledonian orogeny [45].…”

Section: A Comparison Between the Lsod Zn-pb Deposits And Nearby Sulpmentioning

confidence: 84%

Zn-Pb Ores of Mississippi Valley Type in the Lycksele-Storuman District, Northern Sweden: A Possible Rift-Related Cambrian Mineralisation Event

et al. 2012

View full text Add to dashboard Cite

Abstract:The epigenetic Zn-Pb deposits in the Lycksele-Storuman ore district, northern Sweden, are hosted by Paleoproterozoic basement near the margin of the Caledonian mountains. A paleogeographic reconstruction suggests that platform sediments, including Cambrian shales, overlaid the mineralised basement. The mineralisation type, containing sphalerite, galena, calcite and fluorite, is confined to veins and breccias and interpreted to be of Mississippi Valley Type (MVT) style. There is no appreciable wall rock alteration. Fluid inclusion work reveals coexisting aqueous and hydrocarbon fluids. Ore deposition is interpreted to have occurred during mixing of two fluids; a cool (<70 °C) brine with a salinity of 30 eq. mass% CaCl 2 and a hot (~200 °C) brine with about 18 eq. mass% CaCl 2 . The mixing led to complex Sr isotope systematics in the analysed minerals. A tentative sphalerite Rb-Sr isochron age of a 534 ± 13 Ma probably dates mineralisation. The isotope systematics of Pb and Nd are less complex and both elements were essentially leached OPEN ACCESSMinerals 2012, 1 170 from basement rocks and transported by the hot fluid. Ore formation is considered to have taken place during rifting, related to the opening of the Iapetus Ocean.

show abstract

Section: A Comparison Between the Lsod Zn-pb Deposits And Nearby Sulpmentioning

confidence: 84%

Zn-Pb Ores of Mississippi Valley Type in the Lycksele-Storuman District, Northern Sweden: A Possible Rift-Related Cambrian Mineralisation Event

et al. 2012

View full text Add to dashboard Cite

show abstract

“…1981;Rickard 1983;Lindblom 1984Lindblom , 1986 supports the basinal-brine hypothesis of metal transport, whereas that of the "Bjorlykke school" (Bjorlykke and Thorpe 1982) supports the groundwater hypothesis for one of the Laisvail-type deposits (Osen, Norway).…”

Section: Discussionmentioning

confidence: 87%

“…The best documented studies concern the Laisvall deposit (Lindblom and Rickard 1978;Lindblom 1986;Lindblom et al 1989). The first of these studies led Rickard et al (1979) to conclude that the "Laisvall-type" deposits are genetically related to carbonate-hosted lead-zinc deposits.…”

Section: The Evidence From Fluid Inclusionsmentioning

confidence: 99%

“…Groundwater proponents, Bjorlykke and Sangster (1981, p. 205), however, stated that "it may well be that the temperatures and salinities measured in fluid inclusions from Laisvall ores are recording conditions during later diagenesis or metamorphism rather than during ore deposition". The detailed work of Lindblom (1986), in which primary fluid inclusions in four types of penecontemporaneous sphalerite display four distinct ranges in homogenization temperatures with modes of 161~ 129 ~ 110 ~ and 168 ~ (average salt content 24 equiv, wt% NaC1), clearly makes the above statement unjustified.…”

Section: The Evidence From Fluid Inclusionsmentioning

confidence: 99%

See 1 more Smart Citation

Basinal brines and groundwaters as possible metal carriers in the formation of sandstone-hosted lead-zinc deposits

Schrijver

1992

Mineral. Deposita

View full text Add to dashboard Cite

Features of the two best-documented worldclass sandstone-hosted Pb-Zn deposits (Laisvall, Sweden; Yava, Nova Scotia, Canada) and a few similar but smaller deposits (SE Missouri, Quebec Appalachians) are compared with the purpose of contributing to the debate on the problem of the aqueous medium of metal transport: basinal brines or groundwaters? For the dolostonesandstone-hosted deposits in SE Missouri, it is concluded that basinal brines formed this medium in both host rocks. The paleotopographic control of these Missouri deposits is pronounced and leads to the conclusion that such control is insufficient evidence to establish the groundwater hypothesis for the Yava deposit. In the Quebec Appalachian deposits, basinal brines, expelled tectonically, were the most likely metal carriers; these deposits constitute an ore type that differs from other known sandstone-hosted lead deposits.

show abstract

“…en Barnes, 1975, en Schrijver, 1992. Ejemplos de estos depósitos son Laisvall, en los Caledónides de Suecia (Richard, 1983;Lindblom, 1986), Largentière y St. Sébastien d'Aigrefeuille en Francia (Ngoyanadji, 1988), Yava y George Lake en Canadá (Sangster y Vaillancourt, 1990), Mechernich y Maubach en Alemania (Friedrich et al, 1993) y Zeida en Marruecos (Schrijver, 1992).…”

Section: Subtipo Laisvall Encajonados En Rocas Siliciclás-ticasunclassified

Depósitos de Pb-Zn-Cu-Ba-F-Sr epigenéticos estratoligados en series sedimentarias en relación con salmueras de cuenca: depósitos de tipo “Mississippi Valley” (MVT) y similares en México

Tritlla¹,

Levresse²,

Corona-Esquivel³

et al. 2006

BSGM

View full text Add to dashboard Cite

ResumenLos depósitos de Pb-Zn-Cu-Ba-F-Sr epigenéticos estratoligados en series sedimentarias han constituido una de las mayores fuentes de metales en la historia de la humanidad. Aún en la actualidad continuan siendo un objetivo prioritario de exploración para las compañias mineras, debido tanto a su fácil metalurgia como a los grandes tonelajes que presentan los distritos clasifi cados bajo esta tipología.En México existen todo un conjunto de mineralizaciones de Pb-Zn-Ba-F que han sido sistemáticamente consideradas como pertenecientes a tipologías diversas (skarns, reemplazamientos de alta temperatura, epitermales, etc.) que, bajo una nueva pespectiva, responden a un modelo de circulación de fl uidos de cuenca enriquecidos en metales, fl úor y bario durante su tránsito por la serie sedimentaria. Estos fl uidos han dado lugar a un conjunto de cuerpos mineralizados estratoligados que aparecen encajonados dentro de las series de plataforma carbonatada mesozoicas del centro, N y NE de México. Típicamente, no están asociados genéticamente a magmatismo alguno, no causan una alteración muy acusada en la roca encajonante, suelen estar asociados a la presencia de materia orgánica (hidrocarburos líquidos, bitúmen), presentan una mineralogía muy sencilla, a menudo casi monominerálica (barita, celestina, fl uorita, esfalerita, galena) y suelen presentar temperaturas de formación dentro del rango de 90-150 °C con salinidades variables. Todo este conjunto de características hacen a estos depósitos plenamente comparables con los MVT del subtipo Alpino-Apalachiano.En este artículo se lleva a cabo una revisión sobre el conocimiento que se tiene sobre este tipo de depósitos a nivel global para, después, pasar a discutir la presencia de esta tipología en suelo mexicano y sus características geológicas y geoquímicas más relevantes.Palabras clave: Depósitos de tipo MVT, generalidades, geoquímica, depósitos en México, estado del arte. AbstractThe low temperature, epigenetic and stratabound Pb-Zn-Cu-Ba-F-Sr-bearing ore deposits enclosed within sedimentary series have been one of the major sources of metals in history. Presently, exploration companies still fi nd these deposits

show abstract

Textural and fluid inclusion evidence for ore deposition in the Pb-Zn deposit at Laisvall, Sweden

Cited by 25 publications

References 0 publications

Zn-Pb Ores of Mississippi Valley Type in the Lycksele-Storuman District, Northern Sweden: A Possible Rift-Related Cambrian Mineralisation Event

Zn-Pb Ores of Mississippi Valley Type in the Lycksele-Storuman District, Northern Sweden: A Possible Rift-Related Cambrian Mineralisation Event

Basinal brines and groundwaters as possible metal carriers in the formation of sandstone-hosted lead-zinc deposits

Depósitos de Pb-Zn-Cu-Ba-F-Sr epigenéticos estratoligados en series sedimentarias en relación con salmueras de cuenca: depósitos de tipo “Mississippi Valley” (MVT) y similares en México

Contact Info

Product

Resources

About