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Ruggles mine, Grafton, Grafton Co., New Hampshire, USA

Located on Isinglass Mountain. First commercial mica mine in U.S. (1803). Mined for feldspar beginning in 1912, and later for beryl as well. New Hampshire Plutonic Suite pegmatite, Grafton field.
Collecting possible after paying fee ($20 per adult in 2006).

Ref.: Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 876, 914, 986.

www.rugglesmine.com





Mineral List:
  • 'Aglaite'
  • Albite
       var: Cleavelandite
  • Almandine
  • Anglesite
  • Apatite-(CaF)
  • Autunite
  • Becquerelite
  • Bertrandite
  • Beryl
       var: Aquamarine
       var: Heliodor
  • Biotite
  • Bornite
  • β-Uranophane
  • Calcite
  • Chrysoberyl
  • Clarkeite
  • Coconinoite
  • 'Columbite'
  • Cryolite
  • Curite
  • Fourmarierite
  • Galena
  • Graftonite
  • 'Gummite'
  • Haiweeite
  • Kasolite
  • Lepidolite
  • 'Lepidomelane'
  • Lithiophilite
  • Marcasite
  • Meta-autunite
  • Metatorbernite
  • Molybdenite
  • Montmorillonite
  • Muscovite
  • Orthoclase
  • Parsonsite
  • Phosphuranylite
  • 'Psilomelane'
  • Purpurite
  • Pyrite
  • Pyrrhotite
  • Quartz
       var: Amethyst
       var: Rose Quartz
       var: Smoky Quartz
  • Reddingite
  • Safflorite
  • Schoepite ?
  • Schorl
  • Sillimanite
  • Soddyite
  • Staurolite
  • Topaz
  • Triphylite
  • Uraninite
  • Uranophane
  • Uranospinite
  • Vandendriesscheite
  • Vivianite
  • Zircon


    63 entries listed. 48 valid minerals. 2 erroneous literature entries.

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    Copyright © Jolyon & Ida Ralph 1993-2008. Jobs in New Hampshire, USA Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.