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Longnose, Saint Louis County, Minnesota, USA i
Regional Level Types
Longnose Occurrence
Saint Louis County County
Minnesota State
USA Country

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Latitude & Longitude (WGS84):

47° 33' 23'' North , 92° 0' 26'' West

Latitude & Longitude (decimal):

47.55639,-92.00750

Type:

Köppen climate type:

Dfb : Warm-summer humid continental climate

Nearest Settlements:

Place	Population	Distance
Hoyt Lakes	2,004 (2017)	10.6km
Aurora	1,666 (2017)	17.5km
Babbitt	1,519 (2017)	17.6km
Biwabik	992 (2017)	25.1km
McKinley	128 (2017)	30.7km

Mindat Locality ID:

167153

Long-form identifier:

mindat:1:2:167153:0

GUID (UUID V4):

0

Commodities (Major) - Iron, Titanium - Metal; (Minor) - Nickel, Copper
Development Status: Unknown
Host Rock Unit: South Duluth Complex Area
Structure: Several Ne-Trending Normal Faults Parallel The Midcontinent Rift Systam Near The Margin. These Faults Formed During The Opening Of The Rift And Controlled Emplacement Of The Troctolitic And Late Intrusions.
Host Rock: Troctolite
Tectonic Structure: Middle Proterozic Midcontinent Rift System

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

Mineral List

ⓘ 'Chlorite Group'

ⓘ 'Fayalite-Forsterite Series'

ⓘ 'Serpentine Subgroup'

4 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Formula: ◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂

References:

Bornhorst, Theodore J., Rose, William I. (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Proceedings, 40 (2). Institute on Lake Superior Geology. 1-185

ⓘ 'Chlorite Group'

References:

Bornhorst, Theodore J., Rose, William I. (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Proceedings, 40 (2). Institute on Lake Superior Geology. 1-185

ⓘ 'Fayalite-Forsterite Series'

References:

Bornhorst, Theodore J., Rose, William I. (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Proceedings, 40 (2). Institute on Lake Superior Geology. 1-185

Formula: Mg₂(SiO₄)

References:

Bornhorst, Theodore J., Rose, William I. (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Proceedings, 40 (2). Institute on Lake Superior Geology. 1-185

Formula: Fe²⁺TiO₃

References:

Bornhorst, Theodore J., Rose, William I. (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Proceedings, 40 (2). Institute on Lake Superior Geology. 1-185

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

Good, D., Borysenko, J., McBride, J., Walford, P., Smyk, M., Hollings, P., ... & Corkery, J. (2010) Cu-Ni-PGE Deposits in Mafic Intrusions of the Lake Superior Region June 24-30, 2010. 11th International Platinum Symposium

Formula: Fe²⁺Fe³⁺₂O₄

References:

Bornhorst, Theodore J., Rose, William I. (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Proceedings, 40 (2). Institute on Lake Superior Geology. 1-185

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

ⓘ 'Serpentine Subgroup'

Formula: D₃[Si₂O₅](OH)₄

References:

Bornhorst, Theodore J., Rose, William I. (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Proceedings, 40 (2). Institute on Lake Superior Geology. 1-185

Gallery:

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
Group 9 - Silicates
ⓘ	Forsterite	9.AC.05	Mg₂(SiO₄)
ⓘ	Actinolite	9.DE.10	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Unclassified
ⓘ	'Chlorite Group'	-
ⓘ	'Fayalite-Forsterite Series'	-
ⓘ	'Serpentine Subgroup'	-	D₃[Si₂O₅](OH)₄

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	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
O	Oxygen
O	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
O	ⓘ Forsterite	Mg₂(SiO₄)
O	ⓘ Ilmenite	Fe²⁺TiO₃
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Fayalite-Forsterite Series
O	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
Mg	Magnesium
Mg	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Mg	ⓘ Forsterite	Mg₂(SiO₄)
Mg	ⓘ Fayalite-Forsterite Series
Si	Silicon
Si	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Si	ⓘ Forsterite	Mg₂(SiO₄)
Si	ⓘ Fayalite-Forsterite Series
Si	ⓘ Serpentine Subgroup	D₃[Si₂O₅](OH)₄
Ca	Calcium
Ca	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Ti	Titanium
Ti	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	Iron
Fe	ⓘ Actinolite	◻Ca₂(Mg_4.5-2.5Fe_0.5-2.5)Si₈O₂₂(OH)₂
Fe	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Fayalite-Forsterite Series

Other Databases

Link to USGS MRDS:	10082830

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

Mid-continent DomainDomain
Mid-continent RiftNarrow Rift

USA

Minnesota
- Duluth ComplexComplex
  - Western Margin Duluth ComplexComplex

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

Hauck, S. , M. Severson, L. Zanko, S. Barnes, P. Morton, et al. (1997) An overview of the geology and oxide, sulfide, and platinum-group element mineralization along the western and northern contacts of the Duluth Complex: Geological Society of America Special Paper: 312 : 137-185.

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