Zobrazeno 1 - 5
of 5
pro vyhledávání: '"J. R. HAwkes"'
Publikováno v:
SAE Technical Paper Series.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::816ade573f2c753fbefe6b3998b2007c
https://doi.org/10.4271/982310
https://doi.org/10.4271/982310
Autor:
J. R. Hawkes
Publikováno v:
Bulletin Volcanologique. 38:1125-1146
Historical figures for tin production are briefly reviewed. Then follow sections summarizing: 1) the regional geology of South-West England (loosely termed Cornubia), 2) the nature and disposition of metalliferous lodes and their principal ore minera
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de2c0bc6300be3095be80fabcdd91122
https://doi.org/10.1007/bf02597110
https://doi.org/10.1007/bf02597110
Publikováno v:
Mineralogical Magazine. 42:35-40
SummaryBazirite, BaZrSi3O9, is one of several late-stage interstitial minerals present in the aegirine-riebeckite granite of Rockall Island. Crystals are hexagonal, probably ¯6m2, colourless, chiefly as anhedral grains. Only forms noted {10¯10} and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::953d680163cc59aa1099b5ef63d060ed
https://doi.org/10.1180/minmag.1978.042.321.04
https://doi.org/10.1180/minmag.1978.042.321.04
Publikováno v:
Economic Geology. 59:1539-1550
"Small deposits of beryl are located close to the contacts between the two latest granite intrusives in the Rosses ring complex, County Donegal, Ireland. The beryl occurs in patches of greisen, in quartz veins and pegmatites, and as a fine-grained di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca888f6c9324cc523319701474c58ff0
https://doi.org/10.2113/gsecongeo.59.8.1539
https://doi.org/10.2113/gsecongeo.59.8.1539
Autor:
K. E. BEER, J. R. HAWKES
Publikováno v:
Nature. 262:442-442
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33b27dd7c1980787c02b449129efbcfa
https://doi.org/10.1038/262442a0
https://doi.org/10.1038/262442a0