The Naturalist in Nicaragua |
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Page 70
... quartz that run parallel to each other , and are so numerous that across a band more than a mile in width one may be ... quartz lodes contain sulphide of silver , peroxide of manganese , peroxide of iron , sulphides of iron and copper ...
... quartz that run parallel to each other , and are so numerous that across a band more than a mile in width one may be ... quartz lodes contain sulphide of silver , peroxide of manganese , peroxide of iron , sulphides of iron and copper ...
Page 77
... quartz at the expense of the other constituents , up to veins filled with pure quartz , as at Porth Just , near Cape Cornwall ; and , again , the same vein will in some parts be filled with felspar ; in others , contain irregular masses ...
... quartz at the expense of the other constituents , up to veins filled with pure quartz , as at Porth Just , near Cape Cornwall ; and , again , the same vein will in some parts be filled with felspar ; in others , contain irregular masses ...
Page 78
... quartz veins , a regular filling up from the sides towards the centre , as in veins produced by deposits from springs . Quartz veins extend sometimes for miles , and it is necessary to suppose on the hydro - thermal theory that the ...
... quartz veins , a regular filling up from the sides towards the centre , as in veins produced by deposits from springs . Quartz veins extend sometimes for miles , and it is necessary to suppose on the hydro - thermal theory that the ...
Contents
CHAPTER I | 3 |
Commence journey up San Juan riverPalms and wild canes | 13 |
CHAPTER III | 27 |
16 other sections not shown
Other editions - View all
The Naturalist in Nicaragua: A Narrative of a Residence at the Gold Mines of ... Thomas Belt No preview available - 2018 |
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amongst ancient animals ants Atlantic attacks beautiful beetles birds branches bushes butterflies carried cattle Central America Chontales colour continued couvade covered crossed dark Depilto dogs Ecitons feet flowers forest fresh-water fruit glacial period gold grass green Greytown ground hills humming-birds Indians inhabitants insects islands Jinotega Juigalpa lake land larvæ leaf leaf-cutting ants leaves Libertad live lodes longicorn look maize Masaya Matagalpa Mexico miles mines mountain mules Nahuatls natives natural nearly nest Nicaragua night numerous o'clock Ocotal passed plains plants prey probably quartz quartz veins rain range reached resemblance Rio Frio river road rocks rocky San Ubaldo Santo Domingo savannahs seen side slope soon Spaniards species spiders steep stones surface Teustepe told Totagalpa town trachyte travelling trees tropical America valley variety vegetation Velasquez wasp whilst wings yellow