Origin: Milliken (Sweetwater) mine, Viburnum Trend, Reynolds Co.,
Missouri, U.S.A.
Sample size: 9 x 6.5 x 4 cm (top), 7.5 x 5.5 x 3 cm (2nd row), 6.5 x 9 x 3 cm
(3rd row), 9 x 6.5 x 4 cm (4th row), 6.5 x 2 x 8 cm (5th row), 7 x 3 x 9 cm
(6th row), 9 x 5 x 4 cm (7th row), 7 x 4.5 cm (bottom)
Calcite with minor black
ilvaite
crystals
Origin: Dal'negorsk (Dalnegorsk), Primorskiy Kray, Far-Eastern Region, Russia
Sample size: 5.7 x 4.6 x 3.5 cm
Calcite with minor
marcasite
Origin: Linwood Mine, Buffalo, Scott Co., Iowa, U.S.A.
Sample size: 3.5 x 3.4 x 3.2 cm
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