#75253, Bournonite (doubly terminated crystals), Yaogangxian Mine, China (t) $100

#77934, Pyrite, Huaron District, Peru (m) $32

#75251, Bournonite (doubly terminated crystals), Yaogangxian Mine, China (m) $250

#75231, Bournonite (doubly terminated twinned crystals), Yaogangxian Mine, China (m) $325

#77918, Pyrite on Calcite, Chivor Mine, Colombia (m) $225

#75871, Erythrite on Skutterudite, Bou Azzer District, Morocco (m) $85

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

#75935, Galena (Spinel Law-twinned), Sphalerite, Calcite, Chalcopyrite, Dalnegorsk, Russia (c) $150

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

#73965, Sphalerite (Spinel-Law twinned parallel crystals), Second Sovietskiy Mine, Dalnegorsk, Russia (c) $115

#77917, Pyrite on Calcite, Chivor Mine, Colombia (t) $75

#75044, Bournonite (tabular doubly-terminated crystal), Yaogangxian Mine, China (t) $165

#75959, Sphalerite, Galena and Pyrite, Dalnegorsk, Russia (m) $22

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

#75492, Acanthite with wire crystals of Native Silver, Xiaoqinggou, China (m) $165

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

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

#75046, Bournonite (floater formation), Yaogangxian Mine, China (t) $135

#72799, Galena on Quartz, Calcite, Sphalerite, Herja Mine, Baia Mare, Romania (c) $85

#77094, Stephanite, Acanthite, Chalcopyrite , Quartz, Proano Mine, San Luis Shaft, Mexico (t) $38

#76048, Pyrite (rare filiform crystals) on Heulandite, Milepost 41, Oregon Route 224, near Estacada, Oregon (t) $25

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

#78376, Pyrite and Calcite on Datolite, Millington Quarry, New Jersey (m) $22

#75465, Tetrahedrite in Quartz-Barite, Großkogel Mountain, Austria (m) $95

#75234, Acanthite with Native Silver (naturally occurring silver crystals), Xiaoqinggou, China (m) $225

#77252, Sphalerite, Tri-State Lead-Zinc Mining District, Missouri (c) $250

#73383, Franckeite, Mina San José, Bolivia (c) $225

#75331, Acanthite, Xiaoqinggou, China (t) $35

#77557, Pyrite, Eagle Mine, Gilman District, Colorado (m) $45

#75335, Stannite, Yaogangxian Mine, China (t) $100

#72808, Bournonite, Sphalerite, Boulangerite, Pyrite, Baia Mare, Romania (c) $75

#77258, Sphalerite (Spinel-law twinned crystals), Eagle Mine, Colorado (c) $95

#77189, Galena with complex crystallization patterns, Brushy Creek Mine, Missouri (m) $165

#77344, Millerite and Marcasite in Quartz Geode, US Route 27 road cut, Halls Gap, Kentucky (t) $25

#77181, Axinite-(Fe), Arsenopyrite, Quartz, Colebrook Hill, Australia (t) $25

#77712, Pyrite (two interpenetrant cubic crystals), Victoria Mine, Spain (m) $175

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

#77554, Pyrite, Eagle Mine, Gilman District, Colorado (m) $55

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

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

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

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

#77330, Pyrargyrite, San José Mine, Mexico (t) $400

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

#73787, Galena with minor Sphalerite in marble, Lime Crest Quarry (Limecrest), Sussex Mills, New Jersey (lc) $55

#75287, Calcite (butterfly-twinned crystals) with Stibnite inclusions, Xikuangshan Mine, China (c) $450

#77716, Cinnabar on Dolomite, Tongren, China (m) $475

#73782, Galena with Sphalerite in marble, Lime Crest Quarry (Limecrest), Sussex Mills, New Jersey (lc) $55

#73783, Galena with Sphalerite in marble, Lime Crest Quarry (Limecrest), Sussex Mills, New Jersey (lc) $75

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 in Calcite, Chimney Rock Quarry, Bound Brook, New Jersey (lc) $3500

 
BOURNONITE FROM CHINA

Fifteen to twenty years ago bournonite specimens from China were readily available, yet quite expensive. The Yaogangxian Mine was producing fine specimens then, some worth up to $1 million. Bournonite is an uncommon (there are only 138 photos of bournonite from China listed on Mindat.org) sulfosalt mineral, with the formula: PbCuSbS3. Bournonite crystals are commonly complexly twinned, resulting in complex clusters of parallel twinned crystals, with parallel crystal faces, and if cyclic-twinned will exhibit the classic "cog wheel" habit.

The bournonite specimens below are from a stash that was collected in China around the 2000, and have not seen the light of day since they were collected. This is a rare opportunity to acquire this uncommon mineral in large crystals and at discounted prices compared to 15 years ago.

#75365, Bournonite (doubly terminated), Yaogangxian Mine, China (t) $85

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

#75363, Bournonite, Yaogangxian Mine, China (t) $65

#75519, Bournonite, Yaogangxian Mine, China (t) $115

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

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

#75044, Bournonite (tabular doubly-terminated crystal), Yaogangxian Mine, China (t) $165

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

#75523, Bournonite (twinned crystals), Yaogangxian Mine, China (t) $225

#75524, Bournonite (twinned crystals), Yaogangxian Mine, China (t) $165

#75525, Bournonite (twinned crystals), Yaogangxian Mine, China (t) $375

#75521, Bournonite (twinned crystals), Yaogangxian Mine, China (t) $195

#75486, Pyrite with partial coating of Chalcocite, Milpillas Mine, Mexico (m) $35

#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

#75644, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (t) $15

#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

#73817, Pyrite with partial Chalcocite coating, Milpillas Mine, Mexico (t) $24

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

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

#75614, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (c) $45

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

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

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

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

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

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

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

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

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

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