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Allegheny River alluvials, Freeport, Armstrong Co., Pennsylvania, USA


List of minerals arranged by Strunz 10th Edition classification
Group 4 - Oxides and Hydroxides
Ilmenite4.CB.05Fe2+TiO3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Group 9 - Silicates
Augite9.DA.15(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Enstatite9.DA.05MgSiO3
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Kyanite9.AF.15Al2(SiO4)O
Microcline9.FA.30KAlSi3O8
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Orthoclase9.FA.30KAlSi3O8
Sillimanite9.AF.05Al2(SiO4)O
Titanite9.AG.15CaTi(SiO4)O
Tremolite9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
Zircon9.AD.30ZrSiO4
Unclassified Minerals
'Albite-Anorthite Series'-
'Chlorite Group'-
'Garnet'-X3Z2(SiO4)3
'Hornblende'-
Hypersthene-(Fe,Mg)SiO3
Leucoxene-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3Y3Z


22 entries listed. 15 valid minerals.
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