scholarly journals Preliminary results of sulphur isotope studies on sulfides from selected ore deposits and occurrences in the Karkonosze–Izera Massif (the Sudety Mts., Poland)

Mineralogia ◽  
2012 ◽  
Vol 43 (3-4) ◽  
pp. 213-222 ◽  
Author(s):  
Wojciech Mayer ◽  
Mariusz Orion Jędrysek ◽  
Maciej Górka ◽  
Wojciech Drzewicki ◽  
Ksenia Mochnacka ◽  
...  
Keyword(s):  
Ore Deposits ◽  
Genetic Differences ◽  
Sulphur Isotope ◽  
Preliminary Results ◽  
Hydrothermal Mineralization ◽  
Isotope Data ◽  
Isotope Studies ◽  
Polymetallic Mineralization ◽  
Two Populations

AbstractPreliminary sulphur isotope data are presented for selected ore deposits and occurrences in the Karkonosze-Izera Massif, namely, polymetallic mineralization sites at Budniki, Ciechanowice, Izerskie Garby and Sowia Dolina, and the pyrite deposit at Wieściszowice. The data reveal two populations of δ34S values: from 2.74 to 3.95‰ (pyrrhotites and pyrites in Sowia Dolina, and some pyrites in Wieściszowice) and from 0.79 to 1.8‰ (pyrites in Budniki, Ciechanowice and Izerskie Garby, and some pyrites from Wieściszowice). All of the data are indicative of endogenic sulphur typical of hydrothermal mineralization despite the genetic differences between the sites.

Source of Tinny Granite in Gejiu Tin Ore Deposit in Yunnan Province, China

2013 ◽  
Vol 634-638 ◽  
pp. 3493-3497
Author(s):  
Ying Shu Li ◽  
Yan Cai ◽  
Nan Chen ◽  
Jiao Jiao Chen ◽  
Lun Wang ◽  
...  
Keyword(s):  
Yunnan Province ◽  
Ore Deposits ◽  
Sulphur Isotope ◽  
Ore Deposit ◽  
Hydrothermal Mineralization ◽  
Long Time

It had been believed that the genesis of tinny granite in Gejiu tin ore deposits were hydrothermal mineralization in granite of Yanshanian epoch by most researchers for a long time. However, according to the form, attitude and sulphur isotope in the ore of the oreboby, the authors believe the genesis of the tin ore deposit is relict body of granitic superimposed ore-forming of the Yanshanian epoch after the basic volcano ore-forming of the Indo-Chinese epoch. It’s proved that the form and attitude of the oreboby is basically consistent with the form and attitude of the basalt of the Indo-Chinese epoch. Because sulphur isotope in pyrite of the ore is from 0.21 per thousand to 4.4 per thousand, feature of source of the mantle sulphur isotope is reflected.

The metamorphism of pyrite and pyritic ores: an overview

1993 ◽  
Vol 57 (386) ◽  
pp. 3-18 ◽  
Author(s):  
James R. Craig ◽  
Frank M. Vokes
Keyword(s):  
Isotope Exchange ◽  
Ore Deposits ◽  
Sulphur Isotope ◽  
Depositional History ◽  
Sulphide Minerals ◽  
Coexisting Phases

AbstractPyrite, the most widespread and abundant of sulphide minerals in the Earth's surficial rocks, commonly constitutes the primary opaque phase in ore deposits. Consequently, an understanding of the behaviour of pyrite and its relationships with coexisting phases during the metamorphism of pyritebearing rocks is vital to the interpretation of their genesis and post-depositional history. Metamorphism is commonly responsible for the obliteration of primary textures but recent studies have shown that the refractory nature of pyrite allows it to preserve some pre-metamorphic textures. Pyrrhotite in pyritic ores has often been attributed to the breakdown of pyrite during metamorphism. It is now clear that pyrrhotite can be primary and that the presence of pyrrhotite with the pyrite provides a buffer that constrains sulphur activity during metamorphism. Pyrite-pyrrhotite ratios change during metamorphism as prograde heating results in sulphur release from pyrite to form pyrrhotite and as retrograde cooling permits re-growth of pyrite as the pyrrhotite releases sulphur. Retrograde growth of pyrite may encapsulate textures developed during earlier stages as well as preserve evidence of retrograde events. Sulphur isotope exchange of pyrite with pyrrhotite tends to homogenise phases during prograde periods but leaves signatures of increasingly heavy sulphur in the pyrite during retrograde periods.

An assessment of the significance of sulphate sources over the Atlantic Ocean based on sulphur isotope data

2012 ◽  
Vol 62 ◽  
pp. 615-621 ◽  
Author(s):  
C.T. Lin ◽  
A.R. Baker ◽  
T.D. Jickells ◽  
S. Kelly ◽  
T. Lesworth
Keyword(s):  
Atlantic Ocean ◽  
Sulphur Isotope ◽  
Isotope Data

scholarly journals Comparing orthomagmatic and hydrothermal mineralization models for komatiite-hosted nickel deposits in Zimbabwe using multiple-sulfur, iron, and nickel isotope data

2013 ◽  
Vol 49 (1) ◽  
pp. 75-100 ◽  
Author(s):  
Axel Hofmann ◽  
Andrey Bekker ◽  
Paul Dirks ◽  
Bleuenn Gueguen ◽  
Doug Rumble ◽  
...  
Keyword(s):  
Nickel Isotope ◽  
Hydrothermal Mineralization ◽  
Isotope Data ◽  
Nickel Deposits

Genetic differences within natural and planted stands of Quercus petraea

2011 ◽  
Vol 6 (4) ◽  
pp. 597-605 ◽  
Author(s):  
Jiří Dostálek ◽  
Tomáš Frantík ◽  
Miroslava Lukášová
Keyword(s):  
Genetic Structure ◽  
Genetic Differentiation ◽  
Spatial Genetic Structure ◽  
Quercus Petraea ◽  
Genetic Differences ◽  
Sessile Oak ◽  
Population Structures ◽  
Nuclear Microsatellite ◽  
The Impact ◽  
Two Populations

AbstractFive sessile oak [Quercus petraea (Matt.) Liebl.] stands from the Czech Republic were studied to learn about the impact of different types of forest management regimes on the genetic differences among tree populations and on population structures. One population had not been markedly affected by human activity, two populations represented unplanted stands that were extensively managed for a long period of time using the coppice system, and two populations were planted stands. Approximately 100 trees from each stand were mapped and subsequently genotyped using 10 nuclear microsatellite loci. We determined the spatial genetic structure of each population and the genetic differentiation among the populations. We found that: (i) the populations were genetically differentiated, but the differences between the unplanted and planted stands were not markedly significant; (ii) the genetic differentiation among the populations depended on the geographical distribution of the populations; (iii) within unplanted stands, a strong spatial genetic structure was seen; and (iv) within planted stands, no spatial genetic structure was observed. Our findings implies that the analysis of spatial genetic structure of the sessile oak forest stand can help reveal and determine its origin.

Preliminary sulphur isotope data of diagenetic and vein sulphides in the Lower Palaeozoic strata of Ireland and southern Scotland: implications for Zn + Pb + Ba mineralization

1989 ◽  
Vol 146 (4) ◽  
pp. 715-720 ◽  
Author(s):  
I. K. ANDERSON ◽  
C. J. ANDREW ◽  
J. H. ASHTON ◽  
A. J. BOYCE ◽  
J. B. D. CAULFIELD ◽  
...  
Keyword(s):  
Sulphur Isotope ◽  
Isotope Data ◽  
Lower Palaeozoic
Sign in / Sign up

Export Citation Format

Share Document