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Minerals For Sale from Milpillas Mine, Mexico
Azurite, Malachite, Pyrite, Volborthite, Brochantite , Native Copper and Cuprite

Below is a gallery of  minerals for sale from the Milpillas Mine, Mexico available from John Betts - Fine Minerals in New York City, NY. This mine started producing minerals only in the last decade and produced among the best azurite crystals ever found, equal to Tsumeb or Bisbee, in the upper oxide zone at the mine. Now that mining has proceeded deeper Milpillas is producing cuprite, native copper and unusual pyrite crystals coated with Chalcocite-Djurleite-Bornite, though some crystals are uncoated. The mine also produced crystals of volborthite, a rare hydrated copper vanadate that were previously available in large crystals until they were discovered at the mine. Included in this gallery are minerals for sale of malachite, pyrite, cuprite, volborthite, native copper, brochantite and azurite from Milpillas Mine, Mexico.
To purchase mineral specimens, go to the Online order form.

 Sizes: (t) = Thumbnail, (m) = Miniature, (c) = Cabinet, (lc) = Large Cabinet

 

Cuprite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#68468, Cuprite, Milpillas Mine, Mexico (m) $150

Azurite with minor Malachite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75739, Azurite with minor Malachite, Milpillas Mine, Mexico (t) $395

Malachite pseudomorphs after Azurite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75479, Malachite pseudomorphs after Azurite, Milpillas Mine, Mexico (c) $65

Brochantite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73854, Brochantite, Milpillas Mine, Mexico (t) $42

Cuprite with minor Malachite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73431, Cuprite with minor Malachite, Milpillas Mine, Mexico (c) $350

Azurite on Dickite-coated matrix for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75540, Azurite on Dickite-coated matrix, Milpillas Mine, Mexico (m) $75

Cuprite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75148, Cuprite, Milpillas Mine, Mexico (m) $165

Brochantite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73844, Brochantite, Milpillas Mine, Mexico (t) $42

Volborthite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#74747, Volborthite, Milpillas Mine, Mexico (m) $35

Azurite internally altered to Malachite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73805, Azurite internally altered to Malachite, Milpillas Mine, Mexico (m) $225

Volborthite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75564, Volborthite, Milpillas Mine, Mexico (t) $22

Brochantite on Quartz for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73849, Brochantite on Quartz, Milpillas Mine, Mexico (t) $35

Cuprite with minor Native Copper for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75490, Cuprite with minor Native Copper, Milpillas Mine, Mexico (m) $85

Brochantite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73840, Brochantite, Milpillas Mine, Mexico (t) $30

Malachite pseudomorphs after Azurite with minor Dickite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75509, Malachite pseudomorphs after Azurite with minor Dickite, Milpillas Mine, Mexico (c) $350

Malachite pseudomorphs after Azurite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73059, Malachite pseudomorphs after Azurite, Milpillas Mine, Mexico (m) $75

Brochantite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73855, Brochantite, Milpillas Mine, Mexico (t) $35

Brochantite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73850, Brochantite, Milpillas Mine, Mexico (t) $36

Cuprite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75481, Cuprite, Milpillas Mine, Mexico (c) $195

Malachite pseudomorphs after Azurite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75542, Malachite pseudomorphs after Azurite, Milpillas Mine, Mexico (m) $50

Volborthite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75684, Volborthite, Milpillas Mine, Mexico (t) $55

Malachite pseudomorphs after Azurite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75022, Malachite pseudomorphs after Azurite, Milpillas Mine, Mexico (m) $65

Azurite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75533, Azurite, Milpillas Mine, Mexico (m) $125

Volborthite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75648, Volborthite, Milpillas Mine, Mexico (t) $20

Volborthite on matrix for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75597, Volborthite on matrix, Milpillas Mine, Mexico (c) $40

Brochantite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73847, Brochantite, Milpillas Mine, Mexico (t) $34

Volborthite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75563, Volborthite, Milpillas Mine, Mexico (t) $22

Azurite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75054, Azurite, Milpillas Mine, Mexico (t) $22

Azurite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75055, Azurite, Milpillas Mine, Mexico (t) $22

Brochantite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73848, Brochantite, Milpillas Mine, Mexico (t) $30

Azurite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75484, Azurite, Milpillas Mine, Mexico (m) $250

Cuprite with minor Malachite on Dickite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75642, Cuprite with minor Malachite on Dickite, Milpillas Mine, Mexico (m) $55

Volborthite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75565, Volborthite, Milpillas Mine, Mexico (t) $25

Cuprite on Dickite-coated matrix for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75613, Cuprite on Dickite-coated matrix, Milpillas Mine, Mexico (c) $95

Azurite on Dickite-coated matrix for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75498, Azurite on Dickite-coated matrix, Milpillas Mine, Mexico (m) $115

Volborthite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75650, Volborthite, Milpillas Mine, Mexico (t) $10

Volborthite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75654, Volborthite, Milpillas Mine, Mexico (t) $14

Volborthite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75655, Volborthite, Milpillas Mine, Mexico (t) $16

Volborthite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75649, Volborthite, Milpillas Mine, Mexico (t) $15

Volborthite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75657, Volborthite, Milpillas Mine, Mexico (t) $18

Volborthite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75656, Volborthite, Milpillas Mine, Mexico (t) $22

Azurite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75098, Azurite, Milpillas Mine, Mexico (m) $265

Volborthite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75653, Volborthite, Milpillas Mine, Mexico (t) $22

Cuprite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73674, Cuprite, Milpillas Mine, Mexico (m) $495

Chalcocite-Cuprite pseudomorphs after Azurite coated with Malachite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75503, Chalcocite-Cuprite pseudomorphs after Azurite coated with Malachite, Milpillas Mine, Mexico (lc) $350

Azurite with minor Malachite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73671, Azurite with minor Malachite, Milpillas Mine, Mexico (m) $400

Azurite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#72343, Azurite, Milpillas Mine, Mexico (m) $695

NEW INFORMATION ABOUT COATED PYRITE CRYSTALS FROM MILPILLAS MINE, MEXICO

There has been a series of errors in identification of the gray-metallic-coated pyrite crystals from the Milpillas Mine, Mexico.
Now the mystery is solved: the coating is definitively CHALCOCITE.

Here is a chronology of the evolution of misidentifications:

  1. The sulfide zone was encountered in 2015 at the Milpillas Mine and pyrite crystals with uncommon gray-metallic coating were found.

  2. A wholesaler (to remain anonymous) sent specimens to Marcus Origlieri in March 2015 who tested them using SED-EDS analysis that detected copper (Cu), iron (Fe), and sulfur (S).

  3. The wholesaler decided the coating was bornite and sold tham as "Bornite coated Pyrite". I purchased a large lot, along with several other dealers.

  4. I sold many at the time labeled per the wholesaler's identification, including to Prof. Allan Pring at the South Australian Museum.

  5. Prof. Pring tested the coating, and failed to detect Fe, which is a significant component of bornite (= Cu5FeS4). Prof. Pring postulated (correctly) that the EDS analysis detected the Fe in the underlying pyrite.

  6. Based on that analysis, I announced on this site the test results and stated that bornite was unlikely due to the lack of Fe in the tests, but that the coating identification was still unknown. At that time I suggested labeling them as "Pyrite with Chalcocite-Djurleite-Bornite coating" until definitive tests were performed.

  7. I sent additional samples to the South Australia Museum where Ben Grguric mounted them on polished mounts and tested the coating further, described the coating as a 5-10 micron thick layer of chalcocite or djurleite (April 2016).

  8. Jordi Fabre independently had specimens tested by GeoSpectra using alpha particle induced X-ray spectroscopy (August 2016), and by EDS on the longitudinally oriented thin section so the underlying pyrite was not exposed (December 2017) confirmed the identification of the coating as CHALCOCITE.

These events are an example of how one wholesaler, in a rush to sell a new find, failed to wait for proper testing, and propagated false information throughout the mineral community. A similar misidentification occurred with the "ajoite" from the Luputo Mine which was  actually chrysocolla.

I understand the rush to announce new finds, and I understand that EDS is fast and easy. But EDS is not a good test for all cases. When results are not definitive, it is wrong for the wholesaler to "decide" what they should be labeled. As dealers and collectors, it pays to ask questions regarding testing and identification.

Finally, it is noted that chalcocite coating on pyrite is known from several other localities, including the Burra Burra Copper Mine, South Australia, Australia; Chino Mine, Santa Rita District, Grant County, New Mexico;p and Ducktown Mine, County, Tennessee in the USA. The latter were sold as "ducktownite" which were later identified as chalcocite-coated pyrite. The varietal name ducktownite still persists to describe pyrite crystals coated with gray-metallic chalcocite.

SPECIAL NOTE: The pyrite crystals at the Milpillas Mine were fractured after they crystallized and the crystal fragments were frozen in the white dickite-rich matrix, with thin fractures filled with matrix.  John White in the recent Rocks & Minerals magazine describes this as "disjoined" crystals. But the chalcocite coating is on all surfaces of the pyrite crystals, including the fractured surfaces. That means: 1.) pyrite crystallized; 2.) the pyrite crystals fractured and were frozen in matrix; 3.) the chalcocite coating formed on all surfaces of the pyrite at the end

PYRITE WITH CHALCOCITE COATING FROM MILPILLAS MINE, MEXICO

Pyrite with partial coating of Chalcocite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75486, Pyrite with partial coating of Chalcocite, Milpillas Mine, Mexico (m) $35

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73815, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $24

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73816, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (t) $18

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73814, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (t) $12

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75644, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (t) $15

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75323, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (t) $30

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75662, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $36

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73819, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $22

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73820, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $22

Pyrite with partial Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#73817, Pyrite with partial Chalcocite coating, Milpillas Mine, Mexico (t) $24

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75674, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (c) $65

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75645, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $25

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75665, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (c) $65

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75663, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $30

Pyrite with partial coating of Chalcocite for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75348, Pyrite with partial coating of Chalcocite, Milpillas Mine, Mexico (t) $32

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75646, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $40

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75675, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (c) $75

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75614, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (c) $45

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75671, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (c) $65

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75677, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $55

Pyrite with Chalcocite coating in Quartz for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75667, Pyrite with Chalcocite coating in Quartz, Milpillas Mine, Mexico (m) $45

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75664, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $45

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75672, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (c) $85

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75670, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $65

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75676, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (c) $45

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75758, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $14

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75760, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $12

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75759, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $15

Rhodochrosite coated with Wad on Fluorapatite for sale from Foote Mine, Kings Mountain, Cleveland County, North Carolina
#75805, Rhodochrosite coated with Wad on Fluorapatite, Foote Mine, Kings Mountain, North Carolina (t) $16

Fluorapatite on Bertrandite for sale from Emmons Quarry, Uncle Tom Mountain, Greenwood, Oxford County, Maine
#75803, Fluorapatite on Bertrandite, Emmons Quarry, Uncle Tom Mountain, Maine (t) $22

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75765, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $22

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75761, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $40

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75763, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $25

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75766, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (t) $36

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75764, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $28

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75756, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (c) $45

Pyrite with Chalcocite coating for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75757, Pyrite with Chalcocite coating, Milpillas Mine, Mexico (m) $38

PYRITE CRYSTAL WITHOUT CHALCOCITE COATING

Pyrite and Quartz for sale from Milpillas Mine, Cuitaca, Sonora, Mexico
#75570, Pyrite and Quartz, Milpillas Mine, Mexico (m) $36

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a division of allminerals.com, dealer of Fine Minerals since 1989.  

The minerals illustrated on this site were purchased from collectors or wholesale suppliers for resale purposes. The owner of this site did not collect the minerals and collectors should not assume access is permitted to the property based on inclusion in this site. Please contact the property owner to obtain legal permission before entering private property.