NIELSENITE, PdCu3, A NEW PLATINUM-GROUP INTERMETALLIC MINERAL SPECIES FROM THE SKAERGAARD INTRUSION, GREENLAND

2008 ◽  
Vol 46 (3) ◽  
pp. 709-716 ◽  
Author(s):  
A. M. McDonald ◽  
L. J. Cabri ◽  
N. S. Rudashevsky ◽  
C. J. Stanley ◽  
V. N. Rudashevsky ◽  
...  
2002 ◽  
Vol 40 (2) ◽  
pp. 679-692 ◽  
Author(s):  
A. Y. Barkov ◽  
R. F. Martin ◽  
Y. A. Pakhomovsky ◽  
N. D. Tolstykh ◽  
A. P. Krivenko

2009 ◽  
Vol 47 (1) ◽  
pp. 53-62 ◽  
Author(s):  
A. Vymazalova ◽  
F. Laufek ◽  
M. Drabek ◽  
J. Haloda ◽  
T. Sidorinova ◽  
...  

2002 ◽  
Vol 40 (2) ◽  
pp. 671-678 ◽  
Author(s):  
A. Y. Barkov ◽  
R. F. Martin ◽  
T. A.A. Halkoaho ◽  
A. J. Criddle

2012 ◽  
Vol 50 (2) ◽  
pp. 431-440 ◽  
Author(s):  
A. Vymazalova ◽  
F. Laufek ◽  
M. Drabek ◽  
A. R. Cabral ◽  
J. Haloda ◽  
...  

1990 ◽  
Vol 148 ◽  
pp. 101-103
Author(s):  
T.F.D Nielsen ◽  
H.K Schønwandt

A stratabound gold and platinum metal mineralisation has been located in the Tertiary Skaergaard intrusion of the Kangerdlugssuaq area 68°N in East Greenland. The mineralisation is located in the upper part of the Middle Zone (MZ) of the layered gabbros and appears continuous over c. 40 km2. The mineralisation is 2–5 m thick with gold concentrations up to 5.6 g/t, Pd up to 3.5 g/t and Pt up to 1.5 g/t. Major and trace element distributions indicate that the gold is concentrated in the less mafic layers in the mineralised horizon. It is also concluded that previously reported TiO2 contents of the gabbros and the TiO2 enrichment in the evolving liquids of the intrusion have been underestimated by a factor of 2–3.


1961 ◽  
Vol 98 (5) ◽  
pp. 353-366 ◽  
Author(s):  
L. R. Wager

AbstractThe textures of the chilled marginal gabbro of the Skaergaard intrusion and of the coarser marginal gabbros 25 yards further in are described and related to counts of the number of separate crystals of the chief mineral species per cubic centimetre of the rock. An explanation of the textures and number of crystal individuals is attempted in terms of various degrees of supersaturation in the magma. In the chilled rock abundant nucleation of plagioclase and olivine, presumably at the middle labile stage of supersaturation, is inferred. This is followed by ophitic or poikilitic crystallization of pyroxene and ilmenite about scarce nuclei, produced at lower temperatures, presumably during the early labile stage of supersaturation for these two minerals. The coarser gabbro, further in from the margin, has about half the number of plagioclase crystals per cm.3 compared with the chilled rock and only one twenty-fifth the number of olivine crystals, and these have a tendency to be ophitic in texture. Under these slower cooling conditions, supersaturation apparently still reached into the middle labile region for plagioclase, giving many nuclei, while olivine, like pyroxene, separated under early labile supersaturation conditions and only relatively few nuclei formed. The contrasting textures of the plateau magma-type basalts of Mull and the tholeiitic basalts of Northern Ireland are explained along similar lines.


2017 ◽  
Vol 52 (6) ◽  
pp. 929-942 ◽  
Author(s):  
Jens C. Ø. Andersen ◽  
Gavyn K. Rollinson ◽  
Iain McDonald ◽  
Christian Tegner ◽  
Charles E. Lesher

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