Mineralogia Cornubiensis: A Treatise on Minerals, Mines, and Mining: Containing the Theory and Natural History of Strata, Fissures, and Lodes, with the Methods of Discovering and Working of Tin, Copper, and Lead Mines, and of Cleansing and Metalizing Their Products; Shewing Each Particular Process for Dressing, Assaying and Smelting of Ores. To which is Added, an Explanation of the Terms and Idioms of MinersD. Bradford Barton Limited, 1778 - 331 من الصفحات |
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الصفحة
... sometimes warm , 12. Springs temporary or perennial ; in the Miners idiom , " Top and bottom water , ' 13. The ocean the true origin of perpetual fprings , which acts like a huge forcing engine , 13. conjectured from a confideration of ...
... sometimes warm , 12. Springs temporary or perennial ; in the Miners idiom , " Top and bottom water , ' 13. The ocean the true origin of perpetual fprings , which acts like a huge forcing engine , 13. conjectured from a confideration of ...
الصفحة 5
... sometimes even in small grains of a complete metallick appearance . This Copper and ruft on being smelted with a reducing flux , fometimes produce above three - fourths of their weight pure Metal . The water generally used for this ...
... sometimes even in small grains of a complete metallick appearance . This Copper and ruft on being smelted with a reducing flux , fometimes produce above three - fourths of their weight pure Metal . The water generally used for this ...
الصفحة 45
... structure . Sometimes it appears granulated ; and at others , the granules are large , and the maffes coarse ; in which cafe , every separate N granule granule appears of a cubick form . It is fubject AND THEIR FLUX E S. 45.
... structure . Sometimes it appears granulated ; and at others , the granules are large , and the maffes coarse ; in which cafe , every separate N granule granule appears of a cubick form . It is fubject AND THEIR FLUX E S. 45.
الصفحة 68
... and the different colour thereof from the adjacent ftrata . Sometimes it is in blue , gray , black , or brown coloured Lode - ftones , Lode - ftones , extremely fmall ; fometimes veined in 68 OF METALS AND MINERALS ,
... and the different colour thereof from the adjacent ftrata . Sometimes it is in blue , gray , black , or brown coloured Lode - ftones , Lode - ftones , extremely fmall ; fometimes veined in 68 OF METALS AND MINERALS ,
الصفحة 75
... Sometimes the Fiffures or Lodes are thrown fhort on one fide , out of their direct course as it were , by the extreme hardness of this Stratum , and afterwards they recover their course again . At other times the metallick veins are ...
... Sometimes the Fiffures or Lodes are thrown fhort on one fide , out of their direct course as it were , by the extreme hardness of this Stratum , and afterwards they recover their course again . At other times the metallick veins are ...
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عبارات ومصطلحات مألوفة
Adit adventurers affay alfo almoſt alſo anſwer Antimony Aqua Fortis becauſe beſt black Tin bottom buddle cafe calcination called caufe cauſe colour confequence confiderable Copper Cornwall courſe Cryſtal depth diffolved diſcovered diſcovery diſtance dreffing earth eaſily expence facks faid falts fame fathoms feet feldom feparated feven feveral fhall fhillings fhould fhovel fide Fiffures fink fire firft firſt fituation fize fmall folid fome fometimes foon fouth fteam ftrata ftratum fubject fuch fufficient funk fuppofe furface Goffan Gold ground hundred inches inftance Iron itſelf laft lefs leſs likewife Lode meaſure Metal metallick Mineral Mines moft moſt muft Mundick muſt neceffary obferved occafion particles perfons petrifactive pounds prefent purpoſe quantity raiſed reaſon Redruth refpect rich Semi-metals ſeparate Shaft ſhall Shode Silver ſmall ſome ſtate Stones thefe themſelves theſe thofe thoſe thouſand Tin-ftuff Tinners tons underlie uſed vein waſhed weft white Tin Whym