👁 Image
| Martins, Ivo, Mateus, António, Cathelineau, Michel, Boiron, Marie Christine, Ribeiro da Costa, Isabel, Dias da Silva, Ícaro, Gaspar, Miguel (2022) The Lanthanide “Tetrad Effect” as an Exploration Tool for Granite-Related Rare Metal Ore Systems: Examples from the Iberian Variscan Belt. Minerals, 12 (9) 1067 doi:10.3390/min12091067 | Journal (article/letter/editorial) | | Granite-related ore systems include mainly: (i) quartz lodes, breccia pipes and skarns enriched in W-Sn-F(-P)-bearing...of 27 Sn-Li-bearing quartz veins within endo-contact domains; Sn-W quartz veins scattered over the endo/exo-contact...preferentially to exo-contact fields; and W-quartz veins within the exo-contact environments [93]. The...granitoids with metasedimentary restites, (ii) biotite quartz-diorites and granodiorites, and (iii) non-porphyroid...location: GFun3: Biotite granodiorite GFun4: Biotite quartz-diorite GFun5: Transitional facies granite GFun6: | 👁 Image
| | Journal (article/letter/editorial) | | north-northeast to
north-northwest trending gold-bearing quartz veins with
associated hematite, pyrite, arsenopyrite...sphalerite, chalcopyrite, galena, electrum and gold. Adamellite in contact
with the Tarcoola Formation has previously...relationship with the Tarcoola Formation, and the gold-quartz veins were interpreted as being genetically related...the contact between the Tarcoola
Formation and adamellite is a nonconformity. Hence, there
is no genetic...relationship between the mineralization and
the adamellite. Oxygen isotope data indicate that an oreforming | 👁 Image
| Koch, R.D., Ach, J.A., McMahan, A.B., Rice, W.L., Sokaski, Michael (1984) Mineral resource potential map of the Owlshead Mountains Wilderness Study Area, San Bernardino County, California. Open-File Report Vol. 1984 (84-755) US Geological Survey doi:10.3133/ofr84755 | Report (issue) | | studied the effects of intrusion of Mesozoic adamellite into Precambrian
gneiss, and the area's structural...colorimetric, or X-ray fluorescent
methods. Massive quartz deposits with potential for industrial silica resources...includes fine-grained quartz
diorite, mildly altered medium-grained hornblende biotite quartz diorite and diorite...and adamellite, medium-grained biotite
granite, and coarse-grained leucocratic biotite adamellite. The...strikingly uniform
coarse-grained leucocratic biotite adamellite underlies most of the eastern range, and
much | 👁 Image
| | Report (issue) | | metamorphic and plutonic rocks, and
mineralized veins in the Willow Creek gold mining district,
Anchorage...of the batholith, a tonalite (unit TKt)
and an adamellite (unit TKa) (Csejtey and others,1978). These plutons...and schist both host gold-bearing-quartz veins, but
the adamellite is not mineralized. The southern part...the
Willow Creek district is intruded by the adamellite, however, the nature of
the contact between the...ages of
the two plutons, the tonalite and the adamellite (table 1). K-Ar ages from
the tonalite may provide | 👁 Image
| Ju, Nan, Ren, Yunsheng, Zhang, Sen, Kou, Linlin, Zhang, Di, Gu, Yuchao, Yang, Qun, Wang, Hui, Shi, Lei, Sun, Qiushi, Wu, Tong (2018) The Early Jurassic Chang'anbu porphyry Cu-Mo deposit in Northeastern China: Constraints from zircon U-Pb geochronology and H-O-S-Pb stable isotopes. Geological Journal, 53 (6) 2437-2448 doi:10.1002/gj.3079 | Journal (article/letter/editorial) | | during the
early Yanshanian.
KEY W ORDS
biotite adamellite, Chang'anbu deposit, porphyry Cu‐Mo deposit,...dominantly plagioclase granite, biotite granite, and quartz diorite;
porphyry Cu–Mo deposits. The understanding...those of the Indosinian period are porphyraceous adamellite and
type deposits have a close genetic relationship...and those of the Yanshanian are mainly biotite adamellite,
intermediate–acidic magmatism has essentially...Chang'anbu
mine and consist of diorite–quartz diorite–granodiorite, adamellite–
deposit. The S and Pb isotope | 👁 Image
| | Report (issue) | | igneous intrusions ranging in composition from adamellite to gabbro. The early intrusions were
metamorphosed...discordant plutons of gabbro and adamellite (quartz monzonite). The
adamellite is generally coarse-grained...coarse-grained and porphyritic. The
largest adamellite body in York County is the stock with an
area of 23 square miles...of York. This is the type
Yorkville granite. Adamellite exposures south of McConnells are the north end...railroad station.
36.4
STOP 2: Contact, of adamellite (quartz
monzonite of the Catawba pluton with white | 👁 Image
| | Journal (article/letter/editorial) | | collectedmaterials suitable for K-Ar dating
quartz veins having "greisen"envelopes.Skarnfrom demonstrativeore...Akenobe
type")
and
base
metal
skarn
deposits
are
quartz veinsand somelead-zincdepositsmostlyof also included...0.584 X 10-•ø/yr, and covite from a two-mica adamellite, which is a hidden
4øK/K = 0.0119 atomic percent...Tsumo
3.
"
muscovite,alteredenvelope
biotite, quartz diorite
phlogopite,skarn
9.79
2.50
4.28
30.6...3
78.6 q- 3.2
4.
Fuj,!gatani
5.
muscovite,
adamellite,
drillcore
" , pegmatiticpart in skarn
9.12 | 👁 Image
| | Journal (article/letter/editorial) | | which occur within the ore shell. Quartz-sericite alteration with veins is commonly
observed.
Tertiary...This blanketof sedimentaryrocksis
upper Miocene adamellite intrusion which has in- elongatednortheasterlyand...\¾akita (1975), and data colIn the Mamut area, the adamellite porphyry stock
lectedby the authorssinceproductionbegan...orthoses are shown in Table 1.
Igneous rocks
clase,quartz, biotite, and hornblendein a phenocryst
to groundmassratio...bothwithinthe depositand regionally. amountsof orthoclase,quartz, and apatite. Locally
Whole-rockanalyses
of the | 👁 Image
| | Report (issue) | | resources in the study
Fluorspar, occurring in sparse veins, has
area.�
moderate resource potential, as do silver...silver in sparse, high-grade
Each area of moderate
veins and fault breccia.�
resource potential encompasses...study
area. In the northern part of the study area, veins are
sparse and not systematically oriented, but...in three concentrate samples,
and rich fluorspar veins have been worked
intermittently.
Al
115°00'
115°15'...I_
pcfri�
xptri:
Sporadically mineralized quartz veins and fault
breccia in much of the study area | 👁 Image
| Grabezhev, A. I., Levitan, G. M., Vigorova, V. G., Chashchukhina, V. A., Neykur, T. A., Yershova, N. A. (1986) GOLD IN OROGENIC GRANITOIDS OF THE URAL EUGEOSYNCLINE. International Geology Review, 28 (4) 449-460 doi:10.1080/00206818609466285 | Journal (article/letter/editorial) | | petrologic associations (Table 1)
[12], of which the adamellite (granodioriteplagiogranite) association is the...the most pro
ductive. The granite and adamellite-granite
associations are accompanied by rare-metal
mineralization...facies)
Granitoid
association
Postorogenic
Adamellite-granite
(hypabyssal)
Granite-leucogranite
(C...granitesleucogranites
Kremenkul, Zenkov, etc.
(Table 3)
Adamellite-granite
(D 3 -C 1 )
Granodiorites-adamellit...[University of Florida] at 00:30 11 June 2016
1. Adamellite-plagiogTanite formation, early orogenic (C 1 | 👁 Image
| | Journal (article/letter/editorial) | | chromian muscovite is
developed in magnesite–quartz veins hosted in ultramafic talc + magnesite ± hematite...s’est développée dans des veines à magnésite + quartz recoupant des zones d’altération hydrothermales...relatively high Ni content. It occurs in quartz–carbonate
veins located in ultramafic rocks with a propylitic-type... the stratigraphic succession is intruded by adamellite of the Shartash pluton.
The numerous dikes of...within the gold field (Fig. 1). The age of the
adamellite and the dikes, estimated with K/Ar and Rb/
Sr | 👁 Image
| Ju, Nan, Zhang, Sen, Kou, Lin-Lin, Wang, Hai-Po, Zhang, Di, Gu, Yu-Chao, Wu, Tong (2019) Source and Tectonic Setting of Porphyry Mo Deposits in Shulan, Jilin Province, China. Minerals, 9 (11) 657 doi:10.3390/min9110657 | Journal (article/letter/editorial) | | of
166.9 ± 6.7 and 169.1 ± 1.8 Ma, respectively. Quartz and ore minerals were analysed for H–O and
S–Pb...isotopic data
for sulphides,
H–O isotopic
data for
veins,
and geochemical
The ore-forming
materials
of the...for sulphides,
isotopic data forinquartz–sulphide
veins, and geochemical data
for host rocks. These data...by
plagioclase
granites,
biotite
granites,
and
quartz
diorites,
whereas Indo-Chinese period igneous rocks...the Chang’anbu Mo deposit are early Yanshanian quartz diorites,
diorites–granodiorites, adamellites–syenogranites | 👁 Image
| | Journal (article/letter/editorial) | | Fluid inclusions in
both primary and secondary quartz have been studied. The principal inclusions are...apparently displaces the southern margin
of the adamellite. This shatter belt passes close to the
south-east...shatter belt is accompanied by alteration of the adamellite (e.g. a conspicuous reddening in the crags south...south of the microadamellite)
and by quartz veining. Rock samples associated with the
belt show strong...Bailey
& Lawrie, 1960) comprises a central mass of adamellite surrounded, except on the west, by diorites and | 👁 Image
| | Report (issue) | | gold, silver, copper,
lead, zinc, and tungsten in quartz vein and carbonatereplacement deposits. Smaller...silver, gold,
copper, lead, zinc, and tungsten in quartz vein and
carbonate-replacement deposits (fig. 2)...also has high potential for gold and silver in
quartz veins. The north half of the Colton Hills has
moderate...associated with felsic intrusions, breccia,
and intense quartz-sericite alteration in upper Globe
Wash. Intensely...southeast-dipping quartz veins, shear zones,
and faults that cut the Mid Hills Adamellite of
Beckerman and | 👁 Image
| | Report (issue) | | .......
23. Map of western part of Moolyella Adamellite showing distribution of tin and lithium .......granites in the
25. Triangular plots of normative quartz, albite and orthoclase for Pilbara Block granite...Greenbushes area
32. Triangular plot of normative quartz : albite : orthoclase for granitic rocks from the........
47. Chemical analyses of the Moolyella Adamellite ...............................................shown
Simple pegmatites, usually composed of quartz,
albite, and muscovite, contain cassiterite, tantalum | 👁 Image
| | Journal (article/letter/editorial) | | siliceous slate, sandstone, and metamorphogenic quartz veins, overlain to the north
by bituminous dolomites...fragments of quartz, dark siliceous shales,
and grits (grain sizes up to 2-3 cm) cemented by dense quartz-carbonate...near the Besapantau prospect. The occurrence of quartz in the form
of knotted, splintered clusters indicates...rocks are pseudoconglomerates. They are cut by
quartz veinlets, with small ocherous areas of gold mineralization...medium-grained, slightly porphyritic Sardarin granodiorite-adamellite pluton to the
southeast (~7 km from the deposit | 👁 Image
| | Book | | GEOLOGICAL SURVEY OF NEW SOUTH WALES Cover photo: Quartz - mudstone - stibnite breccia vein. Eleanora mine...district Deposits in and adjacent to the Rockvale Adamellite Antimony (- gold - silver) deposits Discussion...district Llangolhlin Adamellite Highlands Complex Tilbuster Granodiorite Mount Duval Adamellite Vralla Granodioirite...Round Mountain Leucoadamellite Botumburra Range Adamellite Jeogla area , Carrai area Willi Willi area Coastal...stones Construction malerials Central Block Reef quartz and bleached chert (silica) deposits Hard rock | 👁 Image
| | Journal (article/letter/editorial) | | scheelite-bearing quartz
veins, and these were followed by auriferous arsenopyrite–pyrite–quartz–carbonate veins with...arsenic and gold, in zones up to
20 m from veins. Quartz–stibnite veins with electrum,
gold, aurostibite, and...into stibnite-poor
gold-bearing veins. Late-stage carbonate–stibnite veins
with gold and silver sulphosalts...sulphosalts cut all earlier veins, and
have open-space filling textures. Aspects of the Hillgrove
deposit have...Australia
(Fig 1A, B). Mineralisation occurs in veins, breccias and
immediately adjacent altered wall | 👁 Image
| | Report (issue) | |
29
Figure 14 Aplite vein offset by pegmatite veins with
later fault
Figure 15 Main structural features...hornblende- bearing adamellitic granites and veins of pegmatite
and quartz, probably all of Mesozoic age, intrude...intrude the Palaeozoic rocks. Twelve samples of
adamellite and granite were analysed.
The Palaeozoic rocks...fragments.
The clasts include grey quartzite, vein quartz,
biotite-granite and grey recrystallised limestone...beds with rounded
to subangular pebbles of vein quartz and quartzite
occur within the sandstones. In their | 👁 Image
| | Journal (article/letter/editorial) | | geochemical characteristics of the
plutonogenic gold-quartz associations of northern Kazakhstan. Gold-telluride...belongs to the plutogenic Late Ordovician gold-quartz association [16], which in
cludes gold-telluride... E. M. SPIRIDONOV AND V. YU. PROKOF'YEV
main I (quartz diorite, tonalite, etc.) and main II
(granodiorite...of dikes of deep origin
(granodiorite porphyry, quartz diorite porphyry,
spessartite, etc.). The K-Ar...10 km2 in area, constituting isolated
bodies of quartz leucogabbro of the early phase and
granitoids of | 👁 Image
| | Journal (article/letter/editorial) | | monoclinic pyroxene-diorite " and a marginal " quartz-hypersthene-porphyrite ".
In one paper (1928) F...gave two analyses for the granodiorite
and the quartz-biotite-hypersthene-porphyrite. No detailed description...:—
1. The uncontaminated acid intrusive rocks, adamellite, granite, and
granophyric microgranite.
2. The...dykes in the surrounding Silurian rocks, and aplite
veins in the main intrusion itself.
In this paper the...the magma is also explained.
II.
ADAMELLITE AND GRANITE
The adamellite and granite which form the core | 👁 Image
| | Journal (article/letter/editorial) | | these rocks. Bodies
of tonalite, granodiorite and adamellite, variably-foliated b y the second deformation...plutons generally o f porphyritic granodiorite and adamellite. These are also usually well-foliated by
the...CORUNNA
_~,
DOWNS
^ ^
^A
,,
'
.
,,- ^
Adamellite
x
x
x
x
lga
,o°'no;°°ng~n **x*
~
x
x
x...post-tectonic granites, such as the Cooglegong Adamellite in the Shaw granitic d o m e were avoided. In...1 k m S of W.G.
Group (10) + 1 pink feldspar adamellite
f r o m Gorge Well
G r o u p s (8) + (11), w | 👁 Image
| | Journal (article/letter/editorial) | | cleavage S2 are developed locally, and
deformed quartz veins are common. F2 folds the S1 cleavage (Figures...south. Microscopically,
these schists comprise quartz, biotite, muscovite, altered
cordierite, rare andalusite...K-feldspar (Figure
3a). S1 is marked by alternating quartz-rich and mica-rich
layers; thin layers of perthite...schists (Figures 2a, 4). In addition to the quartz veins
typically present in these metaturbidites, five...tonalites are pelitic schist, quartzite
and vein quartz. Some are angular breccia fragments
(Figure 4a | 👁 Image
| Volkov, A. V., Savva, N. E., Sidorov, A. A., Prokof’ev, V. Yu., Goryachev, N. A., Voznesensky, S. D., Al’shevsky, A. V., Chernova, A. D. (2011) Shkol’noe gold deposit, the Russian Northeast. Geology of Ore Deposits, 53 (1) 1-26 doi:10.1134/s1075701511010065 | Journal (article/letter/editorial) | | composition from the previously studied mesothermal gold–quartz and epithermal
gold–silver deposits in the Russian...operations were only focused on
highgrade ore from veins together with inevitable
mining of Aubearing wallrock...dikes; (5) faults; (6) gold placer zones; (7) quartz veins; (8) deposits and occurrences: (a) molyb
denum...rocks. The faults that host the main
gold–silver veins are the tectonic sutures steeply dip
ping to the...Cretaceous (a) granite and (b) granodiorite–
adamellite; (4) Late Jurassic–Early Cretaceous diorite; | 👁 Image
| | Journal (article/letter/editorial) | | havecomplexchemicalbehavior
The ArcheanMollyella Adamellite,hostto Sn oc- in magmas(Taylor,1979;Horsnail...ray spectrometermeasurements
in the Lachlan fold
veins,brecciatedin places,which cut the sourceand
belt...tween Holbrookand Cobar (Fig. 1), containsmany quartz veinsmineralizedwith one or more of cassitleucocratic...characteristics.Mineralization is commonly in
quartz veins, but some is present also in greisens, 2O
which...TUCKER
16
o
12
o
o
o
ß
0
ß
oo
'Gretsch veins •
present]
...•v
ß
oßß
x 0 (•
ß
x
ß ß
ß |
|
