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Books Books 1 - 2 of 2 on ... transition porphyry, nor real basalt with olivine, nor trachyte, nor burning....  
" ... transition porphyry, nor real basalt with olivine, nor trachyte, nor burning volcano, have been observed, either in the plains or the groups of insulated mountains. The phenomena of the trachyte formation appear to be confined to the ridge and the... "
A Geognostical Essay on the Superposition of Rocks in Both Hemispheres - Page 153
by Alexander von Humboldt - 1823 - 482 pages
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The gold-seeker's manual

David Thomas Ansted - 1849
...formation appear to be confined to the ridge and the line of the Andes of Chili, Peru, New Granada, St. Martha, and Merida. I announce this circumstance in...iron, have been found; but amidst many indications of sulphuret or muriate of silver, no mine has been discovered which can be compared in richness to those...
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Mining Magazine: Devoted to Mines, Mining Operations, Metallurgy & C

History - 1855
...formation appear to be confined to the ridge and the line of the Andes of Chili, Peru, New Granada, St. Martha, and Merida. I announce this circumstance in...Andes towards the coast of Guiana and Brazil, gold, platinum, palladium, tin. and an immense quantity of specular and magnetic iron, have been found; but...
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