Kungnat

Thanks to O.V.Petersen (for information from his articles) and J.Frisch for specimens.

Kungnat (named for a mountain) is a complex of 2,5x5km, that consists of 2 syenite stocks and a narrow ring dike. The stock in the west contains peralkaline granites, the one in the east syenites, and the ring alkaline gabbro.

The first specimens were collected here as early as 1806-1813 with certainty, but probably even before. There is no real mineral list, the following is but a small beginning.

Mineral list:

aegirine
aegirine-augite
andesine
apatite grp.
astrophyllite
augite
amphibole grp.
barkevikite
biotite
fayalite
ferroaugite
ferrohedenbergite
hastingsite
soda-orthoclase
perthite

quartz

riebeckite


Groennedal-Ika

This is a nepheline-syenite-carbonatite (and many other related rock types) intrusion without spectacular minerals. But even though my mineral list is more than incomplete.

Mineral list:

aegirine
aegirine-augite
amphibole grp.
analcime
apatite grp.
arfvedsonite
barite
biotite
burbankite
calcite
cancrinite
feldspar grp.
fluorite
magnetite
natrolite
nepheline
pyrite
riebeckite
siderite

sodalite

sphalerite


&Suggested reading:

Petersen,O.V., K.Secher: The minerals of Greenland, Mineralogical Record, 24(1993), 2, pp.47-48

Woolley, A.R.: Alkaline Rocks and Carbonatites of the World, Part 1: North and South America, British Museum (Natural History), London 1987

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