Description: Very crystallographically rich beryllonite specimens are highly prized. Most crystals from this area are usually etched and many so-called terminated crystals are actually are showing perfect cleavage.

ⓘ 'Biotite' ?

Formula: K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂

Locality: Beryllonite locality, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA

ⓘ Cassiterite

Formula: SnO₂

Locality: Beryllonite locality, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA

References:

Bastin, E. S. (1911) Geology of the pegmatites and associated rocks of Maine, including feldspar, quartz, mica, and gem deposits. Bulletin 445. US Geological Survey doi:10.3133/b445

ⓘ 'Columbite-(Fe)-Columbite-(Mn) Series'

Locality: Beryllonite locality, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA

References:

Bastin, E. S. (1911) Geology of the pegmatites and associated rocks of Maine, including feldspar, quartz, mica, and gem deposits. Bulletin 445. US Geological Survey doi:10.3133/b445

ⓘ Fluorapatite

Formula: Ca₅(PO₄)₃F

Locality: Beryllonite locality, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA

References:

Bastin, E. S. (1911) Geology of the pegmatites and associated rocks of Maine, including feldspar, quartz, mica, and gem deposits. Bulletin 445. US Geological Survey doi:10.3133/b445

ⓘ Meta-autunite

Formula: Ca(UO₂)₂(PO₄)₂ · 6H₂O

Locality: Melrose Quarry, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA

ⓘ Microcline

Formula: K(AlSi₃O₈)

Localities:

Beryllonite locality, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA
Melrose Quarry, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA

ⓘ Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

Localities:

Beryllonite locality, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA
Melrose Quarry, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA

ⓘ Pyrite

Formula: FeS₂

Locality: Melrose Quarry, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA

ⓘ Pyrrhotite

Formula: Fe_1-xS

Locality: Melrose Quarry, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA

ⓘ Quartz

Formula: SiO₂

Localities:

Beryllonite locality, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA
Melrose Quarry, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA

ⓘ Quartz var. Smoky Quartz

Formula: SiO₂

Locality: Beryllonite locality, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA

ⓘ Schorl ?

Formula: NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)

Locality: Beryllonite locality, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA

ⓘ Triplite

Formula: Mn²⁺₂(PO₄)F

Locality: Beryllonite locality, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA

References:

Bastin, E. S. (1911) Geology of the pegmatites and associated rocks of Maine, including feldspar, quartz, mica, and gem deposits. Bulletin 445. US Geological Survey doi:10.3133/b445

Gallery:

Be₃Al₂Si₆O₁₈ⓘ Beryl var. Aquamarine

Aquamarine

Melrose Quarry, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA

Aquamarine

Melrose Quarry, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA

Aquamarine

Melrose Quarry, Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Pyrrhotite	2.CC.10	Fe_1-xS
ⓘ	Pyrite	2.EB.05a	FeS₂
Group 4 - Oxides and Hydroxides
ⓘ	Quartz	4.DA.05	SiO₂
ⓘ	var. Smoky Quartz	4.DA.05	SiO₂
ⓘ	Cassiterite	4.DB.05	SnO₂
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Beryllonite (TL)	8.AA.10	NaBePO₄
ⓘ	Triplite	8.BB.10	Mn²⁺₂(PO₄)F
ⓘ	Fluorapatite	8.BN.05	Ca₅(PO₄)₃F
ⓘ	Autunite	8.EB.05	Ca(UO₂)₂(PO₄)₂ · 10-12H₂O
ⓘ	Meta-autunite	8.EB.10	Ca(UO₂)₂(PO₄)₂ · 6H₂O
Group 9 - Silicates
ⓘ	Almandine	9.AD.25	Fe²⁺₃Al₂(SiO₄)₃
ⓘ	Beryl var. Aquamarine	9.CJ.05	Be₃Al₂Si₆O₁₈
ⓘ		9.CJ.05	Be₃Al₂(Si₆O₁₈)
ⓘ	Schorl ?	9.CK.05	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
ⓘ	Muscovite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	Microcline	9.FA.30	K(AlSi₃O₈)
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
ⓘ	var. Peristerite	9.FA.35	Na(AlSi₃O₈)
Unclassified
ⓘ	'Biotite' ?	-	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
ⓘ	'Columbite-(Fe)-Columbite-(Mn) Series'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Autunite	Ca(UO₂)₂(PO₄)₂ · 10-12H₂O
H	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
H	ⓘ Meta-autunite	Ca(UO₂)₂(PO₄)₂ · 6H₂O
H	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Be	Beryllium
Be	ⓘ Beryl var. Aquamarine	Be₃Al₂Si₆O₁₈
Be	ⓘ Beryllonite	NaBePO₄
Be	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
B	Boron
B	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
O	Oxygen
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Beryl var. Aquamarine	Be₃Al₂Si₆O₁₈
O	ⓘ Autunite	Ca(UO₂)₂(PO₄)₂ · 10-12H₂O
O	ⓘ Almandine	Fe₃²⁺Al₂(SiO₄)₃
O	ⓘ Beryllonite	NaBePO₄
O	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
O	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
O	ⓘ Cassiterite	SnO₂
O	ⓘ Fluorapatite	Ca₅(PO₄)₃F
O	ⓘ Meta-autunite	Ca(UO₂)₂(PO₄)₂ · 6H₂O
O	ⓘ Microcline	K(AlSi₃O₈)
O	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Quartz	SiO₂
O	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
O	ⓘ Quartz var. Smoky Quartz	SiO₂
O	ⓘ Triplite	Mn₂²⁺(PO₄)F
O	ⓘ Albite var. Peristerite	Na(AlSi₃O₈)
O	ⓘ Columbite-(Fe)-Columbite-(Mn) Series
F	Fluorine
F	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
F	ⓘ Fluorapatite	Ca₅(PO₄)₃F
F	ⓘ Triplite	Mn₂²⁺(PO₄)F
Na	Sodium
Na	ⓘ Albite	Na(AlSi₃O₈)
Na	ⓘ Beryllonite	NaBePO₄
Na	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Na	ⓘ Albite var. Peristerite	Na(AlSi₃O₈)
Mg	Magnesium
Mg	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Al	Aluminium
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Beryl var. Aquamarine	Be₃Al₂Si₆O₁₈
Al	ⓘ Almandine	Fe₃²⁺Al₂(SiO₄)₃
Al	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Al	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
Al	ⓘ Microcline	K(AlSi₃O₈)
Al	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Al	ⓘ Albite var. Peristerite	Na(AlSi₃O₈)
Si	Silicon
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Beryl var. Aquamarine	Be₃Al₂Si₆O₁₈
Si	ⓘ Almandine	Fe₃²⁺Al₂(SiO₄)₃
Si	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Si	ⓘ Beryl	Be₃Al₂(Si₆O₁₈)
Si	ⓘ Microcline	K(AlSi₃O₈)
Si	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Quartz	SiO₂
Si	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Si	ⓘ Quartz var. Smoky Quartz	SiO₂
Si	ⓘ Albite var. Peristerite	Na(AlSi₃O₈)
P	Phosphorus
P	ⓘ Autunite	Ca(UO₂)₂(PO₄)₂ · 10-12H₂O
P	ⓘ Beryllonite	NaBePO₄
P	ⓘ Fluorapatite	Ca₅(PO₄)₃F
P	ⓘ Meta-autunite	Ca(UO₂)₂(PO₄)₂ · 6H₂O
P	ⓘ Triplite	Mn₂²⁺(PO₄)F
S	Sulfur
S	ⓘ Pyrite	FeS₂
S	ⓘ Pyrrhotite	Fe_1-xS
K	Potassium
K	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
K	ⓘ Microcline	K(AlSi₃O₈)
K	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Ca	Calcium
Ca	ⓘ Autunite	Ca(UO₂)₂(PO₄)₂ · 10-12H₂O
Ca	ⓘ Fluorapatite	Ca₅(PO₄)₃F
Ca	ⓘ Meta-autunite	Ca(UO₂)₂(PO₄)₂ · 6H₂O
Ti	Titanium
Ti	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Mn	Manganese
Mn	ⓘ Triplite	Mn₂²⁺(PO₄)F
Mn	ⓘ Columbite-(Fe)-Columbite-(Mn) Series
Fe	Iron
Fe	ⓘ Almandine	Fe₃²⁺Al₂(SiO₄)₃
Fe	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Pyrrhotite	Fe_1-xS
Fe	ⓘ Schorl	NaFe₃²⁺Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Fe	ⓘ Columbite-(Fe)-Columbite-(Mn) Series
Nb	Niobium
Nb	ⓘ Columbite-(Fe)-Columbite-(Mn) Series
Sn	Tin
Sn	ⓘ Cassiterite	SnO₂
U	Uranium
U	ⓘ Autunite	Ca(UO₂)₂(PO₄)₂ · 10-12H₂O
U	ⓘ Meta-autunite	Ca(UO₂)₂(PO₄)₂ · 6H₂O

Localities in this Region

USA

Maine
- Oxford County
  - Stoneham
    - Sugarloaf Mountain
      - Beryllonite locality
      - Melrose Quarry

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

Ganderia DomainDomain
GranderiaPassive Margin

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Sugarloaf Mountain, Stoneham, Oxford County, Maine, USAiRegional Level TypesSugarloaf MountainMountain StonehamTown Oxford CountyCounty MaineState USACountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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Detailed Mineral List:

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List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Localities in this Region

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Sugarloaf Mountain, Stoneham, Oxford County, Maine, USA i
Regional Level Types
Sugarloaf Mountain Mountain
Stoneham Town
Oxford County County
Maine State
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