The cassiterite–sulfide mineralization occurs within quartz veins and greisenized Precambrian Older Granite around the Gindi Akwati region at Ropp complex’s western boundary, north-central Nigeria. intrusion of Jurassic Younger granite porphyry sheared marginal parts mylonitized zone created pathways for fluids that escaped during late-stage consolidation biotite granite. granites are highly di...

Abstract A recent paper by Nishiyama et al. (Earth, Planets, and Space 73:126) examined syntectonic quartz veins to constrain temporal variations in the recurrence intervals between slow slip tremor events. The authors claim that examining liquid-volume fraction of fluid inclusions veins, they can accurately reconstruct pore-fluid pressures (and therein) were operative during faulting at ~ 15 k...

gomish-tappeh zn-pb-cu (ag) deposit is located 90 km southwest of zanjan, in northwestern part of urumieh-dokhtar volcano-plutonic zone. exposed rocks at the area include oligo-miocene volcano-sedimentary and sedimentary sequences as well as pliocene volcano-plutonic sequence (andesite porphyry dykes, dacitic subvolcanic dome and rhyodacitic volcanics). alteration in the deposit developed as si...

Natural dry steam zones (vapour only) are relatively rare; most geothermal systems contain both liquid and vapour and typically follow a boiling point-depth (BPD) relationship. The Nanga Parbat uplift-driven conductive thermal anomaly results in a geothermal system which follows a BPD relationship at shallow levels, but below about 3 km fluid inclusions show that the hydrothermal fluid is dry s...

introduction the study area is located in central part of the khaf- kashmar-bardeskan belt which is volcano-plutonic belt at the north of the dorouneh fault in the north of lut block. the north of the lut block is affected by tectonic rotation and subduction processes which occur in the east of iran (tirrul et al., 1983). the magmatism of lut block begins in jurassic and continues in tertiary (...

the dehno granite massive is located in the east dehno village and southern khomein city and within themetamorphic sanandaj–sirjan zone. the composition of these rocks include: granodiorite, quartzdiorite(tonalite), monzogranite and leucogranite. quartz, alkali feldspar, plagioclase, biotite, andalusite, hornblendemuscovite, tourmaline, zircon and apatite are examples of the existing major and ...

The Baranyevskoe Au-Ag epithermal deposit of low-sulfidation (LS) type is located on the Kamchatka Peninsula in Neogene-Quaternary Central Volcanic Belt, where Au-bearing quartz veins are usually accompanied by veinlet stockworks. Two economic associations typical deposit. first corresponds to gold-pyrite-quartz association with low-grade native gold (521–738‱) intergrown pyrite. Some accessory...

Quartz, carbonates and other minerals as e.g., realgar are present in veins caverns sedimentary rocks the Western Carpathians. In Polish segment, they have been characterized from mineralogical, petrologic, geochemical points of view, well fluid inclusions. Their characters discussed perspective a description particular types chaotic complexes—the tectonic mélange zones, distinguished Carpathia...