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

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

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

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

#75465, Tetrahedrite in Quartz-Barite, Großkogel Mountain (Erzberg Mine?), Austria (m) $75

#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

#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

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

#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

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

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

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

#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

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

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

#77557, Pyrite, Eagle Mine, Gilman District, Colorado (m) $48

#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

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

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

#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

#78480, Chalcocite pseudomorphs after Covellite with Enargite, Pyrite and Quartz, Butte District, Montana (c) $450

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

 
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.

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

#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

#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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