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Pabellón de Pica, Chanabaya, Iquique Province, Tarapacá Region, Chile

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Latitude & Longitude (WGS84): 20° 54' 32'' South , 70° 8' 17'' West
Latitude & Longitude (decimal): -20.9088888889, -70.1380555556


Located 2 km south of Caleta Chanabaya.
Guano was extensively mined in the promontory till mid 19th century.
Additional references at http://www.mindat.org/mesg-105-280722.html.

"I have visited Pabellon de Pica several times and found and discovered the unique copper mineralization up there. Younger Guano deposits like Pabellon de Pica are a very strange environmental zone with a highly unique microbiology. This microbiological life produces a lot of unique Nitrogen components. It is a normal process when such components later go into a part of the mineralization. The Pabellon de Pica is, for now, the only known contact zone of a copper deposit and a young sub-maritime Guano deposit. There is no anthropogenic influence to form the rare copper minerals. Chanabayaite is a good example because the best specimen we collected was on rock samples we took out of a 1-meter deep zone in the steep wall. Minerals like Shilovite and Ammineite form in a massive Halite vein. During the mining process of guano, the local miners never used any explosive, because the base rock is already cracked by the powdery Guano itself."
(Gunnar Färber, http://www.mindat.org/mesg-14-333383.html)

More investigations led to to following results:

-Anorthite: Conf. meth.: EDX (by Joy Desor and Gerhard Möhn)
(Anorthite here means Ca-dominant in the Albite-Anorthite series)
-Clinochlore: Ref.: Bojar et al. (2010)
-Dittmarite: Conf. meth.: PXRD (by Joachim Lorenz)
-Epidote: Conf. meth.: visually
-Magnetite: Conf. meth.: visually, strongly ferromagnetic
-Natrolite: Conf. meth.: PXRD (by Joachim Lorenz)
-Natroxalate: Conf. meth.: IR (by Nikita V. Chukanov)
-Newberyite: Conf. meth.: PXRD (by Joachim Lorenz)
-Prehnite: Conf. meth.: visually and PXRD (the latter by Joachim Lorenz)
-Thénardite: Conf. meth.: chemical tests (by Gerhard Möhn; these tests show pure Na2SO4, no H2O)

Note: Epidote, clinochlore, and ammineite have also been confirmed by A. Kampf (XRD and EDS)
.

Mineral List


25 valid minerals. 6 (TL) - type locality of valid minerals.

The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Bojar, H.-P., Walter, F., Baumgartner, J. & Färber, G. (2010) Ammineite, CuCl2(NH3)2, a new species containing an ammine complex: Mineral data and crystal structure. Canadian Mineralogist, 48, 1359-1371.

Chukanov, N.V., Zubkova, N.V., Mohn, G., Pekov, I.V., Pushcharovsky, D.Yu., Zadov, A.E. (2015) Chanabayaite, Cu2(N3C2H2)2Cl(NH3Cl,H2О,□)4 a new mineral containing triazolate anion. Zapiski RMO, 144(2), 36-47.

Chukanov, N.V., Britvin, S.N., Möhn, G., Pekov, I.V., Zubkova, N.V., Nestola, F., Kasatkin, A.V., Dini, M. (2015) Shilovite, natural copper(II) tetrammine nitrate, a new mineral species. Mineralogical Magazine, 79, 613-623.

Chukanov, N.V., Aksenov, S.M., Rastsvetaeva, R.K., Pekov, I.V., Belakovskiy, D.I., Britvin, S.N. (2015) Möhnite, (NH4)K2Na(SO4)2, a new guano mineral from Pabellón de Pica, Chile. Mineralogy and Petrology, 109, 643-648.

Chukanov, N.V., Aksenov, S.M., Rastsvetaeva, R.K., Lyssenko, K.A., Belakovskiy, D.I., Färber, G., Möhn, G., Van, K.V. (2015) Antipinite, KNa3Cu2(C2O4)4, a new mineral species from a guano deposit at Pabellón de Pica, Chile. Mineralogical Magazine, 79, 1111-1121.

Zubkova, N., Chukanov, N.V., Pekov, I.V., Möhn, G., Giester, G., Yapaskurt, V.O., Lykova, I.S., Pushcharovsky, D.Yu. (2016) The crystal structure of the natural 1,2,4-triazolate compound NaCu2Cl3[N3C2H2]2[NH3]2·4H2O. Zeitschrift für Kristallographie - Crystalline Materials 231, 47-53.

Bojar, H.-P., Walter, F., Baumgartner, J. (2017) Joanneumite, Cu(C3N3O3H2)2(NH3)2, a new mineral from Pabellón de Pica, Chile and the crystal structure of its synthetic analogue. Mineralogical Magazine: 81: 155–166.

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