Sincosite with radiating aggregates of
minyulite
Sincosite with radiating aggregates of
minyulite
Bright green square tabular crystals of sincosite to 0.5mm with good coverage
and associated with a superb, white, radial sprays of
minyulite
to 6mm. Ex. Grenier Collection
The specimen contains some of the largest crystals found - tabular grass green
crystals to 3 mm. Associated with the sincosite is white sprays of
minyulite,
featured in Mineralogical Record article Vol. 30, May-June, 1999 figures 6 &
8.
Origin: Rose Hannibal mine, Lawrence Co., South Dakota, USA
Sample size: about 4 cm, sincosite crystals to 0.25 mm,
minyulite
sprays to 6
mm (top), 6 x 4 x 2 cm, sincosite crystals to 0.25 mm,
minyulite
sprays to
3 mm (2nd row), 12 x 7 x 4 cm (3rd row), 6.5 x 5 x 3 cm (bottom)
Origin: Ross Hannibal mine, Lawrence Co., South Dakota, U.S.A.
Sample size: 3 x 2 x 1 cm with green tabular crystals to about 0.75 mm (top),
4.5 x 4 x 1.5 cm (bottom)
Grass green, square, tabular micro crystals of Sincosite to .075 mm with
white, acicular sprays of
minyulite
to 2 mm.
Origin: Ross Hannibal mine, Lawrence Co., South Dakota, United States
Ex. Grenier collection
Sample size: 6 x 4 x 4 cm
Origin: Ross Hannibal mine, Lawrence Co., South Dakota, United States
Sample size: Grass green, crystal aggregates or rosettes to 1.5 mm
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