Goddard Ledge Quarry (Ford Hill Quarry; Roy Ledge Quarry; Silver Ledge Quarry), Rumford, Oxford Co., Maine, USA

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List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite	2.EB.05a	FeS2
Sphalerite	2.CB.05a	ZnS
Group 4 - Oxides and Hydroxides
Quartz	4.DA.05	SiO2
var: Milky Quartz	4.DA.05	SiO2
var: Rose Quartz	4.DA.05	SiO2
var: Smoky Quartz	4.DA.05	SiO2
Group 5 - Nitrates and Carbonates
Siderite	5.AB.05	FeCO3
Group 8 - Phosphates, Arsenates and Vanadates
Fairfieldite	8.CG.05	Ca2(Mn2+,Fe2+)(PO4)2 · 2H2O
Fluorapatite	8.BN.05	Ca5(PO4)3F
Goyazite	8.BL.10	SrAl3(PO4)2(OH)5 · H2O
Heterosite ?	8.AB.10	(Fe3+,Mn3+)PO4
Laueite	8.DC.30	Mn2+Fe3+2(PO4)2(OH)2 · 8H2O
Montebrasite	8.BB.05	LiAl(PO4)(OH)
Triphylite	8.AB.10	LiFe2+PO4
Group 9 - Silicates
Albite	9.FA.35	NaAlSi3O8
Almandine	9.AD.25	Fe2+3Al2(SiO4)3
Beryl	9.CJ.05	Be3Al2(Si6O18)
Microcline	9.FA.30	KAlSi3O8
Muscovite	9.EC.15	KAl2(AlSi3O10)(OH)2
Schorl	9.CK.05	Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Unclassified Minerals
Columbite	-	(Fe,Mn)(Nb,Ta)2O6

21 entries listed. 20 valid minerals.