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5) [[underlined]] Ore deposits from the Sierra de Aconquija (Capillitas Mines). [[underlined]] Ore deposits in granite, crossed by dykes of rhyolite and andesite. The cassiterite occurs in connection with greisen. Copper, gold, silver, lead, tin mines. A complet collection with all ocurring minerals, wallrocks, smelting products, slags, etc. Fine samples of silver-bearing tetraedrite, bornite, enargite. cassiterite, gold-bearing pyrite and chalcopyrite, silver-bearing galena, rhodochrosite, linarite, cerussite, malachite, azurite, etc. 68 samples from 12 mines and of size 12 x 15 cm. for $ oro 220 54 " " 10 " " " " 11 x 14 " " " " 118 44 " " 10 " " " " 10 x 12 " " " " 95 94 " " 10 " " " " 7 x 9 " " " " 96 78 " " 10 " " " " 7 x 9 " " " " 78 There is in preparation a large geologic investigation on the Sierra de Aconquija, which will soon be published in the: Anales del Ministerio de Agricultura de la República Argentina by Dr. J. Rassmuss. Furthermore Stelzner in his standard work "Beitraege zur Geologie und Palaeontologie der Argentinischen Republik" , has published a very important report on the Capillitas Mines. Full information about the mines mentioned in 3, 4 and 5 will be found too in the: Boletín N. 13, Series B, Geología, del Ministerio de Agricultura de la República Argentina: "Rasgos geológicos generales de las Sierras Pampeanas" by Dr. J. Rassmuss. 6) [[underlined]] Ore deposits of the Paramillo de Uspallata. Province of Mendoza. [[underlined]] Sediments of Rhaetic age with sheets of olivine-diabase and correlated tuffs, crossed by dykes of andesites. Silver, lead, zinc and iron mines. The collection contains very beautiful samples of argentiferous galena, sphalerite, gold-bearing pyrite and chalcopyrite, siderite, etc., and all the country-rocks, diabase, melaphyre, tuffs, sandstones, bituminous slates with Estheria Forbesii Jones (Rhaetic) , etc. 43 samples from 20 mines and of size 12 x 15 up to 14 x 24 cm. for $ oro 120 39 " " 20 " " " " 12 x 15 " " 14 x 18 " " " " 98 33 " " 21 " " " " 10 x 12 " " 11 x 13 " " " " 70 24 " " 12 " " " " 7 x 9 " " " " 30 there are several publications on this subject, for instance: Anales del Ministerio de Agricultura de la República Argentina, Tomo 4, N. 3: "La Precordillera de San Juan y Mendoza", by, Dr. R. Stappenbeck. "El Paramillo de Uspallata" , por el ingeniero de minas German Avé-Lallemant. Memoria presentada a la Sociedad Científica Argentina, 1890. 7) [[underlined]] A very fine and remarkable collection of Argentineminerals, [[underlined]] carefully selected specimens of decloizite (crystals and irregular), brackenbuschite (crystals), stiblite, coquimbite, copiapite, hohmanite, luzonite, famatinite, umangite, eucairite, vanadinite (crystals and irregular), chalcosine (in porphyry), wollastonite, diopside (crystals), Iceland double-refracting spar, argentiferous tetraedrite, cerussite, linarite, malachite, azurite, chrysocolla, brochantite, cassiterite, rhodochrosite (crystals and irregular in form of veins and sheets), enargite (crystals and irregular), native silver, argentite, pyrargirite, proustite, embolite, argentiferous lead and spha]erite, wolframite, cuprotungstite, cuproscheelite, etc. 95 spec. of size 7 x 9 cm. for $ oro 436 [[line separation at this point-typing left side first followed by right]] 87 spec. of size 7 x 9 cm. for $ oro 328 73 " " " 7 x 9 " " " " 280 80 " " " 5 x 6 " " " " 294 65 " " " 5 x 6 " " " " 200 [[right side]] 51 spec. of size 5 x 6 cm. for $ oro 130 60 " " " 4 x 5 " " " " 100 52 " " " 4 x 5 " " " " 82 45 " " " 4 x 5 " " " " 64 80 " " " 3 x 4 " " " " 62
