Bournonite, Quartz and Pyrite (Ref: AX-10-906)
Pachapaqui District, Bolognesi Province, Ancash Department, Peru
72mm x 54mm x 52mm
minID: M0W-CCG
Two-sided specimen with excellent sharp Bournonites on both sides. All the Bournonites show bright silver luster and twinning that in some crystals has the classic cogswheel habit. The side I consider the "front" or better display side has two main Bournonites that are perfectly formed and undamaged, set off by golden Pyrite and milky Quartz crystals. The "back" side has more nice Bournonites but there is some damage and contacts, (that is why it is the back of course). A few years ago matrix Bournonites of this quality were very rare and expensive when available but both China and Peru then began to produce these and they became very affordable. Now both these sources are not producing.From: Well-Arranged Molecules
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