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Lemolo Lake, Douglas County, Oregon, USA i
Regional Level Types
Lemolo Lake Lake
Douglas County County
Oregon State
USA Country

Regional Level Types
Lemolo Lake	Lake
Douglas County	County
Oregon	State
USA	Country

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Lemolo Lake Spillway Boulder

Lemolo Lake, Douglas County, Oregon, USA

Close up of contact zone in hand specimen

Lemolo Lake, Douglas County, Oregon, USA

Titanite boulder

Lemolo Lake, Douglas County, Oregon, USA

Lemolo Lake Spillway Boulder

Lemolo Lake, Douglas County, Oregon, USA

Close up of contact zone in hand specimen

Lemolo Lake, Douglas County, Oregon, USA

Titanite boulder

Lemolo Lake, Douglas County, Oregon, USA

Lemolo Lake Spillway Boulder

Lemolo Lake, Douglas County, Oregon, USA

Close up of contact zone in hand specimen

Lemolo Lake, Douglas County, Oregon, USA

Latitude & Longitude (WGS84):

43° 19' 22'' North , 122° 11' 37'' West

Latitude & Longitude (decimal):

Type:

Köppen climate type:

Csb : Warm-summer Mediterranean climate

Nearest Settlements:

Place	Population	Distance
Oakridge	3,211 (2017)	51.8km
Westfir	257 (2017)	54.1km

Mindat Locality ID:

8012

Long-form identifier:

mindat:1:2:8012:8

GUID (UUID V4):

Collecting in andesite boulders along dam spillway.

The boulders along the spillway came from the excavation of the spillway trench itself. Doug Merson's 2003 photo on the Lemolo Lake page shows the lava (andesite) flow in the background from where the boulders were derived. Most of the interesting mineralogy occurs in the bottom contact zone (roughly 2cm) of that flow.

There are other boulders there, but they are composed of a lighter colored andesite versus the dark gray with a reddish, rubbly contact zone.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

14 valid minerals.

Detailed Mineral List:

ⓘ Aegirine

Formula: NaFe³⁺Si₂O₆

References:

identification made by Dr. Donald Howard

ⓘ Albite

Formula: Na(AlSi₃O₈)

References:

Rod Martin CollectionIdentified by Rod Martin: Visual Identification

ⓘ 'Amphibole Supergroup'

Formula: AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂

References:

Rod Martin CollectionIdentified by Rod Martin: Visual Identification

ⓘ Cristobalite

Formula: SiO₂

References:

"Dan Costian" Collection

ⓘ Diopside

Formula: CaMgSi₂O₆

References:

Micro Probe Fall 2007 Volume X Number 6

ⓘ Enstatite

Formula: Mg₂Si₂O₆

References:

K. Volkman collection

ⓘ Fluorapatite

Formula: Ca₅(PO₄)₃F

References:

Collection of Kelly Starnes. Self-collected on July 10, 2006.

ⓘ Fluoro-edenite

Formula: NaCa₂Mg₅(Si₇Al)O₂₂F₂

References:

Micro Probe Fall 2007 Volume X Number 6

ⓘ Ilmenite

Formula: Fe²⁺TiO₃

References:

Don Howard (2010) International Micromounters Journal, 17, #2, 6.

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

References:

Collection of Kelly Starnes - Collected August 24, 2006

ⓘ 'Mica Group'

References:

Rod Martin CollectionIdentified by Rod Martin: Visual Identification

ⓘ Phlogopite

Formula: KMg₃(AlSi₃O₁₀)(OH)₂

References:

Collection of Kelly Starnes - Collected August 16, 2007

ⓘ Pseudobrookite

Formula: Fe₂TiO₅

References:

Henderson, William A. (1985) Microminerals of the Western Volcanics. The Mineralogical Record, 16 (2) 137-145

ⓘ Titanite

Formula: CaTi(SiO₄)O

References:

Collection of Kelly Starnes 2006

Collected 7/10/2006

ⓘ Tridymite

Formula: SiO₂

References:

Henderson, William A. (1985) Microminerals of the Western Volcanics. The Mineralogical Record, 16 (2) 137-145

ⓘ Zircon

Formula: Zr(SiO₄)

References:

Collection of Kelly Starnes 2006

Collected 7/10/2006

See also: Howard, Donald G., 2004, Micro Probe, Northwest Micro Mineral Study Group, Vol. IX, No. 9, page 3.

Gallery:

NaFe³⁺Si₂O₆ⓘ Aegirine

Aegirine, etc.

Lemolo Lake, Douglas County, Oregon, USA

Aegirine, etc.

Lemolo Lake, Douglas County, Oregon, USA

Aegirine, etc.

Lemolo Lake, Douglas County, Oregon, USA

Aegirine, etc.

Lemolo Lake, Douglas County, Oregon, USA

Aegirine, etc.

Lemolo Lake, Douglas County, Oregon, USA

Aegirine, etc.

Lemolo Lake, Douglas County, Oregon, USA

Aegirine, etc.

Lemolo Lake, Douglas County, Oregon, USA

Aegirine, etc.

Lemolo Lake, Douglas County, Oregon, USA

SiO₂ⓘ Cristobalite

Cristobalite, etc.

Lemolo Lake, Douglas County, Oregon, USA

Cristobalite, etc.

Lemolo Lake, Douglas County, Oregon, USA

Cristobalite, etc.

Lemolo Lake, Douglas County, Oregon, USA

CaMgSi₂O₆ⓘ Diopside

Diopside, etc.

Lemolo Lake, Douglas County, Oregon, USA

Diopside

Lemolo Lake, Douglas County, Oregon, USA

Diopside, etc.

Lemolo Lake, Douglas County, Oregon, USA

Diopside, etc.

Lemolo Lake, Douglas County, Oregon, USA

Diopside

Lemolo Lake, Douglas County, Oregon, USA

Diopside, etc.

Lemolo Lake, Douglas County, Oregon, USA

Diopside, etc.

Lemolo Lake, Douglas County, Oregon, USA

Diopside

Lemolo Lake, Douglas County, Oregon, USA

NaCa₂Mg₅(Si₇Al)O₂₂F₂ⓘ Fluoro-edenite

Fluoro-edenite, etc.

Lemolo Lake, Douglas County, Oregon, USA

Fluoro-edenite

Lemolo Lake, Douglas County, Oregon, USA

Fluoro-edenite, etc.

Lemolo Lake, Douglas County, Oregon, USA

Fluoro-edenite, etc.

Lemolo Lake, Douglas County, Oregon, USA

Fluoro-edenite

Lemolo Lake, Douglas County, Oregon, USA

Fluoro-edenite, etc.

Lemolo Lake, Douglas County, Oregon, USA

Fluoro-edenite, etc.

Lemolo Lake, Douglas County, Oregon, USA

Fluoro-edenite

Lemolo Lake, Douglas County, Oregon, USA

SiO₂ⓘ Tridymite

Tridymite, etc.

Lemolo Lake, Douglas County, Oregon, USA

Tridymite, etc.

Lemolo Lake, Douglas County, Oregon, USA

Tridymite, etc.

Lemolo Lake, Douglas County, Oregon, USA

Tridymite, etc.

Lemolo Lake, Douglas County, Oregon, USA

Tridymite, etc.

Lemolo Lake, Douglas County, Oregon, USA

Tridymite, etc.

Lemolo Lake, Douglas County, Oregon, USA

Tridymite, etc.

Lemolo Lake, Douglas County, Oregon, USA

Tridymite, etc.

Lemolo Lake, Douglas County, Oregon, USA

Zr(SiO₄)ⓘ Zircon

Zircon, etc.

Lemolo Lake, Douglas County, Oregon, USA

Zircon, etc.

Lemolo Lake, Douglas County, Oregon, USA

Zircon

Lemolo Lake, Douglas County, Oregon, USA

Zircon, etc.

Lemolo Lake, Douglas County, Oregon, USA

Zircon, etc.

Lemolo Lake, Douglas County, Oregon, USA

Zircon

Lemolo Lake, Douglas County, Oregon, USA

Zircon, etc.

Lemolo Lake, Douglas County, Oregon, USA

Zircon, etc.

Lemolo Lake, Douglas County, Oregon, USA

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Ilmenite	4.CB.05	Fe²⁺TiO₃
ⓘ	Pseudobrookite	4.CB.15	Fe₂TiO₅
ⓘ	Tridymite	4.DA.10	SiO₂
ⓘ	Cristobalite	4.DA.15	SiO₂
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Fluorapatite	8.BN.05	Ca₅(PO₄)₃F
Group 9 - Silicates
ⓘ	Zircon	9.AD.30	Zr(SiO₄)
ⓘ	Titanite	9.AG.15	CaTi(SiO₄)O
ⓘ	Enstatite	9.DA.05	Mg₂Si₂O₆
ⓘ	Diopside	9.DA.15	CaMgSi₂O₆
ⓘ	Aegirine	9.DA.25	NaFe³⁺Si₂O₆
ⓘ	Fluoro-edenite	9.DE.15	NaCa₂Mg₅(Si₇Al)O₂₂F₂
ⓘ	Phlogopite	9.EC.20	KMg₃(AlSi₃O₁₀)(OH)₂
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
Unclassified
ⓘ	'Amphibole Supergroup'	-	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
ⓘ	'Mica Group'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
H	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
O	Oxygen
O	ⓘ Aegirine	NaFe³⁺Si₂O₆
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
O	ⓘ Cristobalite	SiO₂
O	ⓘ Diopside	CaMgSi₂O₆
O	ⓘ Enstatite	Mg₂Si₂O₆
O	ⓘ Fluorapatite	Ca₅(PO₄)₃F
O	ⓘ Ilmenite	Fe²⁺TiO₃
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
O	ⓘ Pseudobrookite	Fe₂TiO₅
O	ⓘ Titanite	CaTi(SiO₄)O
O	ⓘ Tridymite	SiO₂
O	ⓘ Zircon	Zr(SiO₄)
O	ⓘ Fluoro-edenite	NaCa₂Mg₅(Si₇Al)O₂₂F₂
F	Fluorine
F	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
F	ⓘ Fluorapatite	Ca₅(PO₄)₃F
F	ⓘ Fluoro-edenite	NaCa₂Mg₅(Si₇Al)O₂₂F₂
Na	Sodium
Na	ⓘ Aegirine	NaFe³⁺Si₂O₆
Na	ⓘ Albite	Na(AlSi₃O₈)
Na	ⓘ Fluoro-edenite	NaCa₂Mg₅(Si₇Al)O₂₂F₂
Mg	Magnesium
Mg	ⓘ Diopside	CaMgSi₂O₆
Mg	ⓘ Enstatite	Mg₂Si₂O₆
Mg	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Mg	ⓘ Fluoro-edenite	NaCa₂Mg₅(Si₇Al)O₂₂F₂
Al	Aluminium
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Al	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Al	ⓘ Fluoro-edenite	NaCa₂Mg₅(Si₇Al)O₂₂F₂
Si	Silicon
Si	ⓘ Aegirine	NaFe³⁺Si₂O₆
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Si	ⓘ Cristobalite	SiO₂
Si	ⓘ Diopside	CaMgSi₂O₆
Si	ⓘ Enstatite	Mg₂Si₂O₆
Si	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Si	ⓘ Titanite	CaTi(SiO₄)O
Si	ⓘ Tridymite	SiO₂
Si	ⓘ Zircon	Zr(SiO₄)
Si	ⓘ Fluoro-edenite	NaCa₂Mg₅(Si₇Al)O₂₂F₂
P	Phosphorus
P	ⓘ Fluorapatite	Ca₅(PO₄)₃F
Cl	Chlorine
Cl	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
K	Potassium
K	ⓘ Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
Ca	Calcium
Ca	ⓘ Diopside	CaMgSi₂O₆
Ca	ⓘ Fluorapatite	Ca₅(PO₄)₃F
Ca	ⓘ Titanite	CaTi(SiO₄)O
Ca	ⓘ Fluoro-edenite	NaCa₂Mg₅(Si₇Al)O₂₂F₂
Ti	Titanium
Ti	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Ti	ⓘ Ilmenite	Fe²⁺TiO₃
Ti	ⓘ Pseudobrookite	Fe₂TiO₅
Ti	ⓘ Titanite	CaTi(SiO₄)O
Fe	Iron
Fe	ⓘ Aegirine	NaFe³⁺Si₂O₆
Fe	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Pseudobrookite	Fe₂TiO₅
Zr	Zirconium
Zr	ⓘ Zircon	Zr(SiO₄)

Other Regions, Features and Areas containing this locality

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Cascade RangeMountain Range

North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Micro Probe, Northwest Micro Mineral Study Group, Fall 2007, Volume X, No. 6.

Henderson, William A. (1985) Microminerals of the Western Volcanics. The Mineralogical Record, 16 (2) 137-145

(2004, Spring) Micro Probe Vol. 9 (9) Northwest Micro Mineral Study Group p.3

Howard, Donald G. (2010), International Micromounters Journal: 17(2): 6.

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Lemolo Lake, Douglas County, Oregon, USAiRegional Level TypesLemolo LakeLake Douglas CountyCounty OregonState USACountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

Select Mineral List Type

Mineral List

Detailed Mineral List:

Gallery:

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

Lemolo Lake, Douglas County, Oregon, USA i
Regional Level Types
Lemolo Lake Lake
Douglas County County
Oregon State
USA Country