- 0.6 by 0.6 by 0.3 cm – Gelatin capsule size (<1 cm)
Pyrochroite is a manganese hydroxide mineral related to brucite. Igelström (1864) named the mineral after the Greek for fire and color, since the mineral changes color when heated. This is a fine single crystal showing the hexagonal (rhombohedral) symmetry with some prism faces, and a pinacoidal face. Amazing crystal!
This specimen was part of the personal collection of Ralph Merrill, proprietor of the prolific mail order business Minerals Unlimited. He obtained the piece in 1954. Merrill's collection card and label also ship with the specimen.
Item code: MS0883
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