Koerber, Alexander J. (2018) Geochemical and Petrological Investigation of the Prospective Ni-Cu-PGE Mineralization at the Echo Lake Intrusion in the Upper Peninsula of Michigan, USA. Master's Thesis. 3416.

ⓘ Albite

Formula: Na(AlSi₃O₈)

References:

ⓘ Augite

Formula: (Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆

References:

ⓘ 'Biotite'

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

References:

Koerber, Alexander, Thakurta, Joyashish (2018) PGE-Enrichment in Magnetite-Bearing Olivine Gabbro: New Observations from the Midcontinent Rift-Related Echo Lake Intrusion in Northern Michigan, USA. Minerals, 9 (1) 21 doi:10.3390/min9010021

ⓘ Bornite

Formula: Cu₅FeS₄

References:

ⓘ Chalcopyrite

Formula: CuFeS₂

References:

ⓘ 'Chlorite Group'

References:

ⓘ 'Clinopyroxene Subgroup'

References:

ⓘ Digenite

Formula: Cu₉S₅

References:

ⓘ 'Glauconite'

Formula: K_0.60-0.85(Fe³⁺,Mg,Al)₂(Si,Al)₄O₁₀](OH)₂

References:

ⓘ Hematite

Formula: Fe₂O₃

References:

ⓘ Ilmenite

Formula: Fe²⁺TiO₃

References:

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

References:

ⓘ Magnetite var. Titanium-bearing Magnetite

Formula: Fe²⁺(Fe³⁺,Ti)₂O₄

References:

ⓘ 'Olivine Group'

Formula: M₂SiO₄

References:

ⓘ Pentlandite

Formula: (Ni_xFe_y)_Σ9S₈

References:

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

References:

ⓘ 'Pyroxene Group'

Formula: ADSi₂O₆

References:

ⓘ Pyrrhotite

Formula: Fe_1-xS

References:

ⓘ Quartz

Formula: SiO₂

References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Digenite	2.BA.10	Cu₉S₅
ⓘ	Bornite	2.BA.15	Cu₅FeS₄
ⓘ	Pentlandite	2.BB.15	(Ni_xFe_y)_Σ9S₈
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Pyrrhotite	2.CC.10	Fe_1-xS
Group 4 - Oxides and Hydroxides
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	var. Titanium-bearing Magnetite	4.BB.05	Fe²⁺(Fe³⁺,Ti)₂O₄
ⓘ	Hematite	4.CB.05	Fe₂O₃
ⓘ	Ilmenite	4.CB.05	Fe²⁺TiO₃
ⓘ	Quartz	4.DA.05	SiO₂
Group 9 - Silicates
ⓘ	Augite	9.DA.15	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
ⓘ	Actinolite	9.DE.10	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
Unclassified
ⓘ	'Biotite'	-	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
ⓘ	'Chlorite Group'	-
ⓘ	'Glauconite'	-	K_0.60-0.85(Fe³⁺,Mg,Al)₂(Si,Al)₄O₁₀](OH)₂
ⓘ	'Clinopyroxene Subgroup'	-
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'Pyroxene Group'	-	ADSi₂O₆
ⓘ	'Olivine Group'	-	M₂SiO₄

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
H	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
H	ⓘ Glauconite	K_0.60-0.85(Fe³⁺,Mg,Al)₂(Si,Al)₄O₁₀](OH)₂
O	Oxygen
O	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
O	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
O	ⓘ Glauconite	K_0.60-0.85(Fe³⁺,Mg,Al)₂(Si,Al)₄O₁₀](OH)₂
O	ⓘ Hematite	Fe₂O₃
O	ⓘ Ilmenite	Fe²⁺TiO₃
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Quartz	SiO₂
O	ⓘ Magnetite var. Titanium-bearing Magnetite	Fe²⁺(Fe³⁺,Ti)₂O₄
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
O	ⓘ Pyroxene Group	ADSi₂O₆
O	ⓘ Olivine Group	M₂SiO₄
F	Fluorine
F	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Na	Sodium
Na	ⓘ Albite	Na(AlSi₃O₈)
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Mg	Magnesium
Mg	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Mg	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Mg	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Mg	ⓘ Glauconite	K_0.60-0.85(Fe³⁺,Mg,Al)₂(Si,Al)₄O₁₀](OH)₂
Al	Aluminium
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Al	ⓘ Glauconite	K_0.60-0.85(Fe³⁺,Mg,Al)₂(Si,Al)₄O₁₀](OH)₂
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	Silicon
Si	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Si	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Si	ⓘ Glauconite	K_0.60-0.85(Fe³⁺,Mg,Al)₂(Si,Al)₄O₁₀](OH)₂
Si	ⓘ Quartz	SiO₂
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	ⓘ Pyroxene Group	ADSi₂O₆
Si	ⓘ Olivine Group	M₂SiO₄
S	Sulfur
S	ⓘ Bornite	Cu₅FeS₄
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Digenite	Cu₉S₅
S	ⓘ Pentlandite	(Ni_xFe_y)_Σ9S₈
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	ⓘ Glauconite	K_0.60-0.85(Fe³⁺,Mg,Al)₂(Si,Al)₄O₁₀](OH)₂
Ca	Calcium
Ca	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Ca	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ti	Titanium
Ti	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Ti	ⓘ Ilmenite	Fe²⁺TiO₃
Ti	ⓘ Magnetite var. Titanium-bearing Magnetite	Fe²⁺(Fe³⁺,Ti)₂O₄
Fe	Iron
Fe	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Fe	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Fe	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Fe	ⓘ Bornite	Cu₅FeS₄
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Glauconite	K_0.60-0.85(Fe³⁺,Mg,Al)₂(Si,Al)₄O₁₀](OH)₂
Fe	ⓘ Hematite	Fe₂O₃
Fe	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Pentlandite	(Ni_xFe_y)_Σ9S₈
Fe	ⓘ Pyrrhotite	Fe_1-xS
Fe	ⓘ Magnetite var. Titanium-bearing Magnetite	Fe²⁺(Fe³⁺,Ti)₂O₄
Ni	Nickel
Ni	ⓘ Pentlandite	(Ni_xFe_y)_Σ9S₈
Cu	Copper
Cu	ⓘ Bornite	Cu₅FeS₄
Cu	ⓘ Chalcopyrite	CuFeS₂
Cu	ⓘ Digenite	Cu₉S₅

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

Mid-continent RiftNarrow Rift
Superior DomainDomain

USA

Midcontinent RiftGeologic Province

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Echo Lake Intrusion, Ontonagon County, Michigan, USAiRegional Level TypesEcho Lake IntrusionOutcrop Ontonagon CountyCounty MichiganState 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

Other Regions, Features and Areas containing this locality

References

Echo Lake Intrusion, Ontonagon County, Michigan, USA i
Regional Level Types
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Ontonagon County County
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