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granite porphyry dikes (goldfarb and others,. 2004). thin quartz veinlets, with lesser dolomite and ankerite, fill brittle extensional fractures within the igneous rocks. fine-grained pyrite,
consist of veinlets and irregular masses of magnetite, pyrite, and chalcopyrite in greenstone and con- tact-metamorphosed limestone cut by diorite porphyry. in some places, the altered
phase below 100 c (n,r) and three phases under the 160 c (o); type iiia: inclusions containing 1030 gas (e,f); type iiib, inclusions in which the proportion of the gaseous
(figs. 4f, h), consistent with the generally cl-bright gray color under sem-cl (figs. 207. 5d, f). 208. major and trace element geochemistry. 209. major element data for scheelite are
bse image of arsenopyrite. c eds pattern for arsenopyrite. download : download high-res image (428kb) download : download full-size image. fig. 4. a hutti gold mines scheelite
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the ministry of culture and higher education of iran to. m.g. is greatly appreciated. the comments of two economic. geology reviewers were helpful. february 9, 1998; january 4, 1999.
zhijun guo jinwen li xinying xu yongjian kang. sm-nd analyses of seven scheelite samples from scheelite-quartz veins in the honghuaerji scheelite deposit produce a well-
). the distinct variations in the composition of rutile, particularly the high and variable contents of w (up to 4.2 wt. wo3) suggest that w substitutes for ti with double substitution of fe
a scanning electron microscope stub under (a) normal and (b) shortwave ultraviolet light (modified from mcclenaghan et al. in press). a). b). a alluvial deposits in general powdery clay
438. new zealand journal of geology and geophysics, 1993, vol. 36 . a. ^60. . fig. 1 locality map showing the main areas of mine workings in the. barewood area and the mineral-.
craw, d. abstract: the round hill deposit is a major gold and tungsten resource in eastern otago. the deposit formed in and is deformed by a complex shear zone which strikes
in strike of regional aeromagnetic linears. more resistive zones (?). cross faults that accommodate the high damage-zone jogs, arrays of cross faults at approximately 70 to the second
vicinity of the woxi deposit. legend: a, cretaceous red sandy conglomerate; b, sinian; c, banxi group (neoproterozoic); d, madiyi formation (banxi group); e, wuquangxi formation (
, cu, and sr than tourmaline from orogenic gold deposits of the val-d'or district. furthermore, schwarzwald pegmatitic tourmaline has higher mn,. fe, and zn contents but lower mg, ca,
patterns are normalized to account for light ree enrichment. and depletion, respectively, there is excellent agreement be-. tween the size of the preferred ree and
, damian, g., dill, h.g., buzgar, n., apopei, a.i. (2015) mineralogy and geochemistry of sulfosalts from baia sprie ore deposit (romania) - new bismuth minerals occurrence. ore
behaviour. geol. soc. lond. spec. publ. 54,. 1528. teagle, d.a.h., norris, r.j., craw, d., 1990. structur al controls on gold-be aring quartz. mineralisation in a duplex thrust system,
provided living and working quarters in the field and gave full access to the company's maps, drill logs, and assays, as .well as permission to publish information. page 8. 156.
p56059 is a quartz vein 40 cm above the hanging wall of lode outcrop at the golden bar mine. p58425 is from quartz veins in wakamarina quartzite near trig. 110. p58589 is a grab
, two of them object to manganese, and one to nickel. the last company referred to set extreme limits of 0.25 per cent for phosphorus, 0.25 per cent for nickel, 6.0 per cent for.
(roberts et al. 2006) and the paleozoic turbidite-hosted gold deposits of nova scotia, canada (dostal et al. 2009). selected trace element concentrations in titanite, epidote, apatite and
all these tourmalines have a schorliticdravitic composition and belong to the alkali group. most of the tourmalines contain high al contents, which may suggest that the fluids are al-
, canada. trans. inst. min. metall. 95:b183-b194. google scholar. holm, d., norris, r.j., craw, d. (1989) brittle and ductile deformation in a zone of rapid uplift: central southern alps,
of the gold deposition. the gold deposit at timmins is cut by matachewan-type diabase dikes. although gates and hurley (1973) obtained a rb-sr age of 2633. 93 ma for the
hydrothermal alteration is centered on the intrusion brec- cias and extends outward for several hundred meters into the porphyritic quartz monzonite, radiometric dating (k- and fission
the authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
photo of scheelite under plain light (left) and ultraviolet light (right) taken by michael bainbridge. through his research, rmy was able to find a chemical signature relating to specific