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Pigeonite Gallery

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Pigeonite : (Mg,Fe2+,Ca)(Mg,Fe2+)[Si2O6], Periclase : MgO, Brucite : Mg(OH)2

Gåsgruvan limestone quarry, Filipstad, Värmland, Sweden

Crystal of pigeonite(center), periclase (brownish) and brucite (black) in calcite. Size picture 20 mm. Collection and photo Kjell Gatedal.
 © Kjell GatedalPhoto ID: 111033    View Count: 458

Pigeonite : (Mg,Fe2+,Ca)(Mg,Fe2+)[Si2O6], Augite : (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]

Beaver Bay, Lake Co., Minnesota, USA

Harvard Museum of Natural History specimen. Label is about 5.5 cm across. P. Cristofono photo.
 © 2007 Peter CristofonoPhoto ID: 95830    View Count: 416
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