👁 Image
| Andersen, Jens C. Ø., Rollinson, Gavyn K., McDonald, Iain, Tegner, Christian, Lesher, Charles E. (2017) Platinum-group mineralization at the margin of the Skaergaard intrusion, East Greenland. Mineralium Deposita, 52 (6) 929-942 doi:10.1007/s00126-016-0707-3 | Journal (article/letter/editorial) | | mineralization at the margin of the Skaergaard
intrusion, East Greenland
Jens C. Ø. Andersen 1 & Gavyn K...(PGEs) along the northern margin of the Skaergaard intrusion
include a sulfide-bearing gabbro with slightly...PGE + Au.
Both have assemblages of pyrrhotite, pentlandite, and chalcopyrite typical for orthomagmatic sulfides...that the occurrences are
related to the Skaergaard intrusion. The Marginal Border
Series locally displays...explained by sulfide-silicate
immiscibility in the Skaergaard magma with R factors of 110–
220. Nickel depletion | 👁 Image
| | Report (issue) | | 23/02/07
13:16
Page 1
The PGE potential
in Greenland
No. 8 - February 2007
GO_08.qxp
23/02/07
...potential
in Greenland
The potential for Platinum Group Element (PGE) resources in Greenland is
clear and...Palaeogene environments. The PGE potential in Greenland attracted interest already in the
1960s and has...1970s .
The corporate interest in PGE targets in Greenland was initiated by
Kryolitselskabet Øresund in the...norites in West Greenland. Platinomino
A/S was established in 1968 to search
for Merensky Reef type deposits | 👁 Image
| | Journal (article/letter/editorial) | | sulphur loss in the Skaergaard Intrusion: Implications
for the formation of the Platinova Reef
Jens C.Ø. Andersen...
Abstract
The stratabound Platinova Au–Pd Reef in the Skaergaard Intrusion is intimately linked to Cu–Fe...suggest that the reef is related to
silicate–sulphide liquid immiscibility in the Skaergaard magma. However...shape, volume, and compositional relations of the Skaergaard lithologies allows for numerical
modeling of...of LZa through 26 : 74 at the level of the Platinova
Reef to 18 : 82 at the Sandwich Horizon.
The present-day | 👁 Image
| Holwell, David A., Keays, Reid R., McDonald, Iain, Williams, Megan R. (2015) Extreme enrichment of Se, Te, PGE and Au in Cu sulfide microdroplets: evidence from LA-ICP-MS analysis of sulfides in the Skaergaard Intrusion, east Greenland. Contributions to Mineralogy and Petrology, 170 (5) doi:10.1007/s00410-015-1203-y | Journal (article/letter/editorial) | | LA‑ICP‑MS analysis of sulfides
in the Skaergaard Intrusion, east Greenland
David A. Holwell1 · Reid R. Keays2...Springerlink.com
Abstract The Platinova Reef, in the Skaergaard Intrusion,
east Greenland, is an example of a magmatic...poor. However, even for such deposits, the Platinova Reef contains extremely low volumes
of sulfide and...analyses of sulfide microdroplets from the Platinova
Reef, which show that they have the highest Se concentrations...Keywords Skaergaard · Platinum-group elements ·
Gold · Selenium · Sulfide saturation · Platinova Reef · S/Se | 👁 Image
| | Journal (article/letter/editorial) | |
Metallogeny of Greenland
Jochen Kolb, Jakob K. Keiding, Agnete Steenfelt, Karsten Secher...Rosa, Diogo, Stensgaard, Bo M., Metallogeny of Greenland,
Ore Geology Reviews (2016), doi: 10.1016/j.oregeorev...pertain.
ACCEPTED MANUSCRIPT
Metallogeny of Greenland
JOCHEN KOLB1, JAKOB K. KEIDING1,2, AGNETE STEENFELT1...Economic Geology, Geological Survey of Denmark and Greenland, Øster
Voldgade 10, 1350 Copenhagen K, Denmark...TE
D
MA
Corresponding author: jkol@geus.dk
Greenland is the largest island on Earth, with 80% of its | 👁 Image
| | Journal (article/letter/editorial) | | varying from 30 to ~90 keV. At higher energy, only pentlandite
((Fe,Ni)9S8) can theoretically be differentiated...APPLICATION TO ORE DEPOSITS
a)
Chalcopyrite
Pentlandite
Pyrite
Pyrrhotite
Atte nua tion
30
20
10
0...linear attenuation coefficients of pyrrhotite,
pentlandite, chalcopyrite, and pyrite (a) and a variety of...relationship
between base metal sulfides (Pn = pentlandite, Po = pyrrhotite, Ccp = chalcopyrite) and silicate...a sample of Pd5 layer of the Platinova reef of the Skaergaard intrusion (see
details in Fig. 7).
in | 👁 Image
| | Journal (article/letter/editorial) | | recrystallization of PGE minerals.
Introduction
IN 1990, Platinova Resources discovered a layer rich in gold
and...mafic-ultramafic intrusive complexes emplaced along the
East Greenland continental margin containing Au and PGE
mineralized...rocks (Fig. 1). Of these, the Platinova reef of the
Skaergaard intrusion is most similar in size and morphology...Albany, NY 12222
0361-0128/00/3071/945-26 $6.00
Platinova reef is a continuous, strata-bound zone of gabbro...the Kruuse Fjord Gabbro Complex (Arnason et al., 1997a; 1997b), Nordre Aputitêq
intrusion (Arnason and | 👁 Image
| | Book | | CASE HISTORIES
15. Fedorov-Pana layered mafic intrusion, (Kola Peninsula, Russia): approaches, methods...Michaud, J. Rickard
369-390
18. Discovery of the J-M Reef, Stillwater Complex, Montana: the role of soil and...R.T. Brown
409-429
20. The Platinova Reef of the Skaergaard intrusion
T.F.D. Nielsen, J.C.O. Andersen...Chromitite
Merensky Reef
STILLWATER COMPLEX
GREAT DYKE
MUNNI MUNNI INTRUSION
SKAERGAARD INTRUSION
CONTRASTS AND...Stratigraphic Association
Mineral Compositions
Within-Reef Fractionation of the PGE
Cu/Pd values
SUMMARY
57 | 👁 Image
| Aird, Hannah M., Ferguson, Katherine M., Lehrer, Malia L., Boudreau, Alan E. (2017) A study of the trace sulfide mineral assemblages in the Stillwater Complex, Montana, USA. Mineralium Deposita, 52 (3) 361-382 doi:10.1007/s00126-016-0664-x | Journal (article/letter/editorial) | | variable proportions of pyrrhotite, chalcopyrite, pentlandite,
and ±pyrite. Excluding vein assemblages and...assemblages are mainly
found within and below the J-M reef, where native copper
and sphalerite are also locally...no silicate alteration. An upward trend from
pentlandite-rich to pyrrhotite-rich to pyrite-rich assemblages... and the same
trend repeats from just below the reef and continues into the
overlying N-II and GN-II...element-enriched sulfide ore
zone, such as the J-M reef.
Keywords Magmatic sulfides . Stillwater Complex | 👁 Image
| | Journal (article/letter/editorial) | | persistent
layers. The best-known example is the Merensky Reef
of the Bushveld Complex (Fig. 1C). This exceptional...Form of Ore-Hosting Magma Bodies
1.
Stratiform reef-style PGE deposits are exclusively hosted
within...(Hnf) and troctolite (Troc) fragments of
host intrusion within sulfide (Sul) also containing laths of...(Plg). (C) Underground exposure of the Merensky Reef,
Bushveld Igneous Complex (South Africa). Layer...relationship of ore distribution to shape of intrusion
or lava flow, as appropriate. (A) Komatiite flow-hosted | 👁 Image
| Bowles, J. F. W., Prichard, H. M., Suarez, S., Fisher, P. C. (2013) The first report of platinum-group minerals in magnetite-bearing gabbro, Freetown Layered Complex, Sierra Leone: occurrences and genesis. The Canadian Mineralogist, 51 (3). 455-473 doi:10.3749/canmin.51.3.455 | Journal (article/letter/editorial) | | margin of sulfides, mainly chalcopyrite and minor pentlandite. The
entire PGM assemblage is found mainly interstitial...the Tertiary Rum intrusion in NW Scotland
(Butcher et al. 1999), from the Skaergaard igneous
complex in...in Greenland (Andersen et al. 1998, Andersen
2006), and from the Kap Edvard Holm complex south
east of...of Skaergaard (Arnason & Bird 2000, Elsdon
1969). The Freetown complex has been dated, with
an age of...in
Liberia and suggests that the origin of the intrusion is
associated with the early opening of the equatorial | 👁 Image
| | Journal (article/letter/editorial) | | mineralization hosted in a medium-size layered intrusion
Eduardo T. Mansur, Cesar F. Ferreira Filho, Denisson...mineralization hosted in a medium-size layered intrusion, Ore Geology
Reviews (2020), doi: https://doi...mineralization hosted in a medium-size layered intrusion
Eduardo T. Mansur*¹,³, Cesar F. Ferreira Filho¹...interval with disseminated base metal sulfides
(pentlandite > pyrrhotite >>> chalcopyrite) located along...Sulfide Zone extends along the entire length of the
intrusion (~ 3 km) and hosts the bulk of PGE resources of | 👁 Image
| | Journal (article/letter/editorial) | | similarities with mineralization in the Stella Intrusion,
Navigator is more like Rio Jacaré.
17
18
Jameson...Cu-dominated sulfides.
15
16
Three magnetite-related, PGE reef-type prospects from the west Musgraves;
•
Latitude...(Cu/S ratios are typically >1). Cobalt-rich pentlandite and millerite are trace
36
sulfides in these...the base of the mineralization, highlighting that reef-type
42
mineralization has been intersected.
...PPGE>IPGE, which is typical
44
for magnetite-related, reef-type Cu-PGE deposits. The Jameson mineralization | 👁 Image
| McDonald, A. M., Cabri, L. J., Rudashevsky, N. S., Stanley, C. J., Rudashevsky, V. N., Ross, K. C. (2008) Nielsenite, PdCu3, a new platinum-group intermetallic mineral species from the Skaergaard intrusion, Greenland. The Canadian Mineralogist, 46 (3) 709-716 doi:10.3749/canmin.46.3.709 | Journal (article/letter/editorial) | | INTERMETALLIC MINERAL SPECIES
FROM THE SKAERGAARD INTRUSION, GREENLAND
Andrew M. McDONALD§
Mineral Exploration...species discovered in the Skaergaard intrusion, Kangerdlugssuaq area, East Greenland,
occurs in a tholeiitic...digenite, chalcopyrite, cobaltpentlandite, Co-rich pentlandite, and sphalerite.
Associated platinum-group minerals...geologist with the Geological Survey of Denmark and Greenland.
Keywords: nielsenite, Pd–Cu intermetallic, new...species, platinum-group elements, Skaergaard intrusion, Greenland.
§
¶
E-mail address: amcdonald@laurentian | 👁 Image
| Rudashevsky, N. S., McDonald, A. M., Cabri, L. J., D. Nielsen, T. F., Stanley, C. J., Kretzer, Yu. L., Rudashevsky, V. N. (2004) Skaergaardite, PdCu, a new platinum-group intermetallic mineral from the Skaergaard intrusion, Greenland. Mineralogical Magazine, 68 (4) 615-632 doi:10.1180/0026461046840208 | Journal (article/letter/editorial) | | platinum-group
intermetallic mineral from the Skaergaard intrusion, Greenland
N. S. RUDASHEVSKY1,*, A. M. MCDONALD2...Canada K1A 0G1
5
Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark...mineral discovered in the Skaergaard intrusion, Kangerdlugssuaq area,
East Greenland. It occurs in a tholeitiic...digenite, chalcopyrite, with rare cobalt pentlandite, cobaltoan pentlandite, sphalerite, keithconnite,
vasilite...elements, hydroseparation, Skaergaard intrusion, Greenland, Duluth intrusion, Minnesota.
Introduction | 👁 Image
| Cao, Jun, Wang, Christina Yan, Xu, Yi-Gang, Xing, Chang-Ming, Ren, Ming-Hao (2017) Triggers on sulfide saturation in Fe–Ti oxide-bearing, mafic-ultramafic layered intrusions in the Tarim large igneous province, NW China. Mineralium Deposita, 52 (4) 471-494 doi:10.1007/s00126-016-0670-z | Journal (article/letter/editorial) | | insignificant crustal contamination. Rocks of the Piqiang
intrusion have relatively low εNd(t) values of −3.1 to +1...Poor correlation of PGE and S for the Piqiang
intrusion is attributed to the involvement of multiple sulfidestage...three layered intrusions have little potential of reef-type PGE mineralization.
Four criteria are summarized...small ultramafic sills such as the
Jinbaoshan intrusion in SW China (Wang et al. 2010). The
PGE-rich reefs...chromitites
Merensky reef
Central
J-M reef
MSZ
Precious Metals zone
Platinova reef
USA/Wyoming
2700
Zimbabwe | 👁 Image
| | Journal (article/letter/editorial) | | Palladium Alloys
in Au–Pd Ore of the Skaergaard Pluton, Greenland
N. S. Rudashevskya, V. N. Rudashevskya...Petersburg, Russia
Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK1350 København, Denmark...alloys (2314 grains) from the Au–Pd ore of the
Skaergaard layered gabbroic pluton have been studied. Skaergaardite...Duluth is closely
associated with sulfides (pentlandite, chalcopyrite,
bornite, chalcocite), rockforming...V–
Ti–Cr–Fe oxides. In the Skaergaard layered gabbroic
pluton (Greenland), the (Cu,Fe)(Au,Pd,Pt) com | 👁 Image
| | Journal (article/letter/editorial) | | the oxide layers of the Hongge mafic–ultramafic
intrusion, Emeishan Large Igneous Province, SW China
Zhong-Jie...Hongge intrusion
Emeishan Large Igneous Province
a b s t r a c t
The Hongge layered intrusion (259.3...Igneous Province (ELIP), SW China. The Hongge
intrusion consists of a lower olivine clinopyroxenite zone...concentrations of PGE in the oxide layers of the Hongge
intrusion. Unlike in the economic PGE (platinum-group elements)...Pd) coeval Xinjie intrusion (259 ± 3 Ma), the oxide layers in the Hongge intrusion contain very
low PGE | 👁 Image
| Pshenitsyn, Ivan V., Ariskin, Alexey A., Korost, Dmitry V., Sobolev, Sergei N., Yapaskurt, Vasily O., Nikolaev, Georgy S., Kislov, Evgeny V. (2023) X-ray Computed Tomography of PGE-Rich Anorthosite from the Main Reef of the Yoko–Dovyren Layered Massif. Minerals, 13 (10) doi:10.3390/min13101307 | Journal (article/letter/editorial) | | Tomography of PGE-Rich Anorthosite from
the Main Reef of the Yoko–Dovyren Layered Massif
Ivan V. Pshenitsyn...Tomography of PGE-Rich
Anorthosite from the Main Reef of
the Yoko–Dovyren Layered Massif.
Minerals 2023...low-sulfide PGE-rich horizon of the Yoko–Dovyren intrusion in
Southern Siberia. These studies were carried...identified as electrum.
Keywords: Yoko–Dovyren intrusion; PGE-rich anorthosite; computed tomography; sulfides;...Siberia (hereafter YDM or simply the Dovyren intrusion).
1.1. Short Notes on Previous CT Studies of Sulfide-Mineralized | 👁 Image
| | Journal (article/letter/editorial) | | from the Midcontinent
Rift-Related Echo Lake Intrusion in Northern
Michigan, USA
Alexander James Koerber...
Abstract: The Echo Lake intrusion in the Upper Peninsula (UP) of Michigan, USA,...Troctolite is the predominant rock
unit in the intrusion, with interlayered bands of peridotite, mafic...PGE-enriched zone is comparable to other well-known reef-like PGE deposits, such
as the Sonju Lake deposit...% Ni; 0.27–0.66 wt. % Cu [9]. The Sonju
Lake intrusion in the Beaver Bay Complex in northeastern Minnesota | 👁 Image
| Barnes, Stephen J., Fisher, Louise A., Godel, Bélinda, Pearce, Mark A., Maier, Wolfgang D., Paterson, David, Howard, Daryl L., Ryan, Christopher G., Laird, Jamie S. (2016) Primary cumulus platinum minerals in the Monts de Cristal Complex, Gabon: magmatic microenvironments inferred from high-definition X-ray fluorescence microscopy. Contributions to Mineralogy and Petrology, 171 (3) doi:10.1007/s00410-016-1232-1 | Journal (article/letter/editorial) | | range
20–150 ppb, in the Monts de Cristal layered intrusion in
Gabon, west Africa. This occurrence is distinctly...Cristal Complex is a layered mafic–ultramafic intrusion in Gabon, containing layers of anomalously
Pt-enriched...>100 km
long and 1–3 km wide, ultramafic–mafic intrusion (EdouMinko et al. 2002; Maier et al. 2015). It...pyroxenite layer are very
homogenous across the intrusion. The data cluster quite
tightly from 20–120 ppb...detected
within this unit, or elsewhere within the intrusion. Orthopyroxene has Mg# 78–85, 200–1000 ppm Ni | 👁 Image
| | Journal (article/letter/editorial) | | Platinum-group mineralogy of the Fazenda
Mirabela intrusion, Brazil: the role of high
temperature liquids...have been identified in the Fazenda
Mirabela intrusion that hosts the Ni–Cu–platinum-group element (PGE)...Keywords: Platinum-group elements, Mirabela Fazenda intrusion
This paper is part of a special issue on Ni-PGE...Ni-PGE deposits
Introduction
The Fazenda Mirabela intrusion is an ultramafic–mafic
layered igneous body situated...Bahia State, northeastern Brazil (Fig. 1). The intrusion hosts the Santa
Rita ore deposit (Barnes et al | 👁 Image
| | Journal (article/letter/editorial) | | assumed.
The Precious Metals zone is one of several Skaergaard-type strata-bound precious metals zones associated...origin of the Skaergaard mineralized zone itself—including the potentially economic Platinova reefs—can be...large Late Proterozoic
mafic-ultramafic layered intrusion in the eastern lowlands of
Bolivia (Fig. 1, inset)...metals mineralization found in the
Skaergaard intrusion, Greenland (Bird et al., 1991; Nielsen
and Brooks...of partition coefficients, (2) the origin of Skaergaard-type deposits, and (3) economic viability.
Geologic | 👁 Image
| Locmelis, M., Barnes, S. J., Pearson, N. J., Fiorentini, M. L. (2009) Anomalous Sulfur-Poor Platinum Group Element Mineralization in Komatiitic Cumulates, Mount Clifford, Western Australia. Economic Geology, 104 (6) 841-855 doi:10.2113/gsecongeo.104.6.841 | Journal (article/letter/editorial) | | this
is inconsistent with current models for offset-reef PGE concentrations which involve the onset of sulfide...associated with either (1) chromitites (e.g.,
the UG-2 reef of the Bushveld Complex (Cawthorn, 1999;
Cawthorn...Oberthür, 2002; Oberthür et al., 2003), the
Merensky reef of the Bushveld Complex (Naldrett et al.,
† Corresponding...1986), the Platinova reefs in the Skaergaard intrusion (Andersen et al., 1998), the J-M reef in the Stillwater...(Zientek et al., 1990), the Munni Munni layered intrusion in
Western Australia (Barnes, 1993; Barnes and | 👁 Image
| Prichard, Hazel M., Mondal, Sisir K., Mukherjee, Ria, Fisher, Peter C., Giles, Nicolas (2018) Geochemistry and mineralogy of Pd in the magnetitite layer within the upper gabbro of the Mesoarchean Nuasahi Massif (Orissa, India) Mineralium Deposita, 53 (4) 547-564 doi:10.1007/s00126-017-0754-4 | Journal (article/letter/editorial) | | a sill-like Archean layered ultramafic-mafic intrusion genetically linked to high-Mg siliceous basalt...Bahia, Brazil (Sá et al.
2005), the Skaergaard Intrusion in Greenland (e.g., Nielsen
et al. 2015), the Rincón...the USA (Hauck et al. 1997), and
the Freetown Intrusion in Sierra Leone (Bowles et al. 2013).
Platinum-group...example in
the Skaergaard Intrusion (e.g., Nielsen et al. 2015), the
Freetown Intrusion (Bowles et al...Nuasahi
magnetitite is comparable to the Platinova Reef at Skaergaard
(e.g., Andersen et al. 1998; Holwell |
|
