Piscataquis Co., Maine, USA

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List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Sulphur	1.3.5.1	S8
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 9:8
Pentlandite	2.7.1.1	(Fe,Ni)9S8
AmXp, with m:p = 1:1
Pyrrhotite	2.8.10.1	Fe1-xS (x = 0 to 0.17)
AmBnXp, with (m+n):p = 1:1
Chalcopyrite	2.9.1.1	CuFeS2
AmBnXp, with (m+n):p = 3:4
Linnaeite ?	2.10.1.1	Co2+Co3+2S4
Violarite	2.10.1.8	Fe2+Ni3+2S4
AmBnXp, with (m+n):p = 1:2
Marcasite	2.12.2.1	FeS2
Pyrite	2.12.1.1	FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite	4.3.1.2	Fe2O3
Ilmenite	4.3.5.1	Fe2+TiO3
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite	7.2.2.3	Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Siderite	14.1.1.3	FeCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite	16a.3.1.1	Cu2(CO3)(OH)2
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Melanterite	29.6.10.1	FeSO4 · 7H2O
Group 31 - HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
Miscellaneous
Copiapite	31.10.5.1	Fe2+Fe3+4(SO4)6(OH)2 · 20H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite	41.8.1.1	Ca5(PO4)3F
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Fayalite	51.3.1.1	Fe2+2SiO4
Forsterite	51.3.1.2	Mg2SiO4
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Almandine	51.4.3a.2	Fe2+3Al2(SiO4)3
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon	51.5.2.1	ZrSiO4
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite	52.4.3.1	CaTi(SiO4)O
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Augite	65.1.3a.3	(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Enstatite	65.1.2.1	MgSiO3
Ferrosilite	65.1.2.2	FeSiO3
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
Antigorite	71.1.2a.1	Mg3(Si2O5)(OH)4
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz	75.1.3.1	SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite	76.1.3.1	NaAlSi3O8
Microcline	76.1.1.5	KAlSi3O8
Orthoclase	76.1.1.1	KAlSi3O8
Unclassified Minerals
Albite var: Oligoclase	-	(Na,Ca)[Al(Si,Al)Si2O8]
'Amphibole Group'	-	AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Anorthite var: Labradorite	-	(Ca,Na)[Al(Al,Si)Si2O8]
Biotite	-
'Chlorite Group'	-
Enstatite var: Bronzite	-	(Mg,Fe2+)2[SiO3]2
Galena var: Argentiferous Galena	-	PbS
'Hornblende'	-
Hypersthene	-	(Mg,Fe)SiO3
Limonite	-	FeO(OH) · nH2O
'Pyroxene Group'	-
'Serpentine Group'	-	D2[Si2O5](OH)4 + or - nH2O
Turgite	-

42 entries listed. 33 valid minerals.