| Chrysocolla, Chalcocite, Bornite, Chalcopyrite, Covellite, Malachite, Azurite, Manganese Wad, Ga- ROCKS...limonite or hematite, and sometimes chrysocolla, covellite, and bornite, making quite a showy collection...Mexico. This onyx takes a beautiful polish. PHILIPPINES — A nice specimen of botryoidal black psilomelane...manganese deposit near Jose' Panganiban, Camarines Norte, Southern Luzon Island, Philippines. Mr. Haldén personally...the specimen as he had spent many years in the Philippines. SCOTLAND — Colorless xls of cerussite have been |
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| At its underground copper mine in Pinar del Rio Province the company has in prog¬ ress an intensive safety...and there CuS-l-Zn**. now exists in effect a covellite suspen¬ sion in a zinc sulphate solution. The...Secretary of Agriculture, Commonwealth of the Philippines, was in New York in May, while visiting the United...Santa Rosa Mining Com¬ pany, Inc., at Jose Panganiban, Camarines Norte, P. I. He is now in charge of the...of February, 1938, under the caption of “The Philippines,” and head phrases “Year Prosperous, tyWith Of |
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