#70597, Acanthite, San Juan de Rayas Mine, Mexico (t) $35

#77711, Orpiment with Realgar, Mercur District, Utah (t) $250

#75249, Bournonite, Yaogangxian Mine, China (m) $375

#75521, Bournonite (twinned crystals), Yaogangxian Mine, China (t) $185

#73762, Acanthite, San Juan de Rayas Mine, Mexico (t) $85

#75733, Sphalerite (Spinel Law twinned crystals), France Stone Co. Quarry, 4.8 km east of Logansport, Indiana (m) $225

#73402, Quartz on Bournonite with Chalcopyrite and Jamesonite-Boulangerite, Yaogangxian Mine, China (m) $145

#73968, Pyrite over Hematite, Miniera di Rio Marina, Isola d'Elba, Italy (m) $115

#75332, Acanthite, Mina la Sirena, Mexico (t) $115

#78455, Pyrite, Route 81 road cut, south of Syracuse, New York (t) $15

#75525, Bournonite (twinned crystals), Yaogangxian Mine, China (t) $365

#72799, Galena, Quartz, Calcite, Sphalerite, Herja Mine, Baia Mare, Romania (c) $95

#76389, Pyrite, Eagle Mine, Gilman District, Colorado (c) $55

#75522, Bournonite (twinned crystals), Yaogangxian Mine, China (t) $150

#73758, Bournonite (cyclic twinned crystals), Yaogangxian Mine, China (t) $135

#78760, Sphalerite on Dolomite, Lisheen Mine, Panel 18, Moyne, Ireland (m) $150

#75331, Acanthite, Xiaoqinggou, China (t) $30

#75527, Bournonite (complexly twinned crystals), Yaogangxian Mine, China (m) $225

#75044, Bournonite (tabular doubly-terminated twinned crystals), Yaogangxian Mine, China (t) $145

#78755, Chalcopyrite with Calcite and minor Tetrahedrite, Huanzala Mine, Peru (m) $295

#75492, Silver (Native Silver wire crystals) on Acanthite, Xiaoqinggou, China (m) $150

#75644, Pyrite with Chalcocite partial coating, Milpillas Mine, Mexico (t) $25

#75935, Galena (Spinel Law-twinned), Sphalerite, Calcite (twinned), Chalcopyrite, Dalnegorsk, Russia (c) $175

#77258, Sphalerite (Spinel-law twinned crystals), Eagle Mine, Colorado (c) $90

#75614, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (c) $48

#75524, Bournonite (twinned crystals), Yaogangxian Mine, China (t) $155

#75523, Bournonite (complexly twinned crystals), Yaogangxian Mine, China (t) $215

#75335, Stannite, Yaogangxian Mine, China (t) $115

#73383, Franckeite with Zinkenite, Mina San José, Bolivia (c) $175

#77934, Pyrite, Huaron District, Peru (m) $30

#75363, Bournonite, Yaogangxian Mine, China (t) $75

#77189, Galena with complex crystallization patterns, Brushy Creek Mine, Missouri (m) $150

#78706, Arsenopyrite, Dravite-Schorl Tourmaline, Muscovite, Panasqueira Mine, Portugal (c) $450

#77714, Realgar, No. 5 Mine, Baia Sprie (Felsöbánya), Romania (c) $3500

#77330, Pyrargyrite (unusually large crystal), San José Mine, Mexico (t) $425

#75528, Bournonite (twinned crystals), Yaogangxian Mine, China (m) $415

#70849, Pyrite and Quartz, (Tsuchiya-Ishizaki Mine), Japan (lc) $450

#78480, Chalcocite pseudomorphs after Covellite with Enargite, Pyrite and Quartz, Butte District, Montana (c) $400

#73319, Pyrite and Calcite, Bull's Ferry Road condominium construction site, New Jersey (lc) $325

#75497, Bournonite (complexly twinned crystals) on Quartz, Yaogangxian Mine, China (m) $275

The chalcocite below, from Chimney Rock Quarry, is from my private collection

This chalcocite from the Chimney Rock Quarry is an important museum-quality mineral specimen that I acquired for my private collection many years ago. To the best of my knowledge, this is the largest and finest chalcocite specimen every collected at Chimney Rock. This quarry has not been accessible to collectors for the last 25+ years. Chalcocite, a rare mineral in New Jersey trap rock quarries, occurs at the boundary of two rock formations, where copper-rich solutions encounter impermeable layers above, causing copper minerals to precipitate, followed by late-forming calcite.

The ONLY reason I am selling this specimen is that it is too large for my display case.

I highly recommend this, without reservation, for collectors of top-quality minerals.

#73189, Chalcocite with Chrysocolla embedded in Calcite vein, Chimney Rock Quarry, Bound Brook, New Jersey (lc) $3500

#75670, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $65

#75765, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $22

#75665, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (c) $65

#75761, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $40

#75645, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $25

#75756, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (c) $45

#75662, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $36

#75758, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $14

#75757, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $38

#75760, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $12

#75764, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $28

#75675, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (c) $75

#75672, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (c) $85

#75763, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $25

#75677, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $55

#75663, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $30

#75667, Pyrite with Chalcocite coating in Quartz, Milpillas Mine, Mexico (m) $45

#75676, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (c) $45

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