Diederik Visser
Minerals & Petrological Services
This specimen is host to a 3 cm crystal of smoky
quartz
and a number of black to greenish black crystals of aegerine to 4.5 cm in
length. There are also a couple of small tabular shaped crystals of
xenotime-Y to 0.4 cm across
Origin: Chilwa Alkaline Area, Mt. Malosa, near Zomba, Malawi
Sample size: 6 x 5 x 5 cm (top/2nd row), 7.5 x 5 x 4.3 cm (3rd/bottom row)
This specimen has abundant crystals of pyroxene var. schefferite. Also found
are a few partial crystals of
Långbanite.
Origin: Långban, Sweden, Europe
Ex. Frank Edwards collection
Sample size: 9.8 x 7 x 2.8 cm
This specimen has abundant schefferite, which is a aegirine variety, and minor
clinohedrite and
willemite.
Right photo under SW UV light.
Origin: Franklin, Sussex Co., New Jersey, U.S.A.
Ex. Frank Edwards collection
Sample size: 10.5 x 9 x 5.5 cm
John Veevaert, Trinity Mineral Co
Origin: Mt. St.-Hilaire, Rouville Co., Quebec, Canada
Ex Marvin Pearce collection
Sample size: 9 x 5.5 x 4.5 cm
Origin: Mt. Maloso, Domasi, Malawi
Sample size: 5.5 x 4.5 x 2 cm
Aegirine on feldspar
Origin: Zomba, Malawi, Africa
Sample size: 6.2 x 3.1 x 2.7 cm
Variety schefferite
Origin: Långhan, Sweden
Sample size: 3.7 x 2.1 x 1.9 cm