Anorthoclase





 Location Found: Franklin
     
 Mineral Note: Anorthoclase is no longer recognized as a separate species, but as an alkali feldspar intermediate between low sanidine and high albite. Albite is on the Franklin-Sterling Hill species list; sanidine is not. To which species existing specimens labeled "anorthoclase" belong is uncertain, pending further study. For that reason we do not yet include anorthoclase in the total species count.
 Year Discovered: 1885
     
 Formula: (Na,K)AlSi3O8
 Essential Elements: Aluminum, Oxygen, Silicon, Sodium
 All Elements in Formula: Aluminum, Oxygen, Potassium, Silicon, Sodium
     
 IMA Status: Discredited
     
     
 To find out more about this mineral at minDat's website, follow this link   Anorthoclase

     
 References:
Dunn, Pete J. (1995). Franklin and Sterling Hill New Jersey: the world's most magnificent mineral deposits. Franklin, NJ.: The Franklin-Ogdensburg Mineralogical Society. p.509

Frondel, Clifford (1972). The minerals of Franklin and Sterling Hill, a checklist. NY.: John Willey & Sons. p.42


     
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