Quartz with phantoms of
hematite
coating an earlier phase of the crystal growth. There are also small clusters
of epidote.
Origin: Megu, Sichuan, China, Asia
Sample size: 7.3 x 4 x 1.7 cm (top), 9 x 5.4 x 4.2 cm (2nd/3rd row), 8.8 x 6.5
x 4.7 cm (4th/5th row), 8.3 x 6.2 x 1.8 cm (6th row), 6.8 x 4.3 x 1.8 cm
(7th/8th row), 4 x 2.7 x 2.2 cm (9th/bottom row)
Hollandite included in quartz crystal
Origin: Ambatofinandrahana, Madagascar
Ex. Alessandro Genazzani collection
Sample size: 2.5 x 1 x 1.5 cm
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A single termination of clear smokey quartz part filled with long white
needles of
albite. Three of the crystal faces have a preferential late phase
deposit of fine
albite
and mica making them dull, the other three are bright and glassy.
Origin: Gillette Quarry, Haddam, Connecticut, U.S.A.
Ex. William Pinck, Mark Wrigley collection
Sample size: 9.2 x 5.1 x 4 cm
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