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Sloan No. 2 diatreme (Kopylovite Type Locality), Sloan diatremes, State Line Kimberlite Mining District, Larimer County, Colorado, USAi
Regional Level Types
Sloan No. 2 diatreme (Kopylovite Type Locality)Pipe
Sloan diatremes- not defined -
State Line Kimberlite Mining DistrictMining District
Larimer CountyCounty
ColoradoState
USACountry

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Latitude & Longitude (WGS84):
40° 50' 35'' North , 105° 27' 11'' West
Latitude & Longitude (decimal):
40.84331,-105.45331
GRN:
N28W57
Type:
Pipe
Köppen climate type:
BSk : Cold semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
Red Feather Lakes343 (2011)12.5km
Laporte2,450 (2015)35.8km
Wellington7,807 (2017)40.5km
Fort Collins161,175 (2017)42.3km
Estes Park6,257 (2017)52.1km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Fort Collins RockhoundsFort Collins, Colorado42km
Mindat Locality ID:
470295
Long-form identifier:
mindat:1:2:470295:8
GUID (UUID V4):
0


May be Sloan #1 diatreme (they are on the same pipe).

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


4 valid minerals. 1 (TL) - type locality of 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:

ⓘ Diamond
Formula: C
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ Ilmenite
Formula: Fe2+TiO3
ⓘ Ilmenite var. Picroilmenite
Formula: (Fe2+,Mg)TiO3
ⓘ Kopylovite (TL)
Formula: K2Ti(Si3O9)
Type Locality:
ⓘ Pyrope
Formula: Mg3Al2(SiO4)3

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘDiamond1.CB.10aC
Group 4 - Oxides and Hydroxides
ⓘIlmenite4.CB.05Fe2+TiO3
ⓘvar. Picroilmenite4.CB.05(Fe2+,Mg)TiO3
Group 9 - Silicates
ⓘPyrope9.AD.25Mg3Al2(SiO4)3
ⓘKopylovite (TL)9.CA.K2Ti(Si3O9)
Unclassified
ⓘ'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

CCarbon
Cⓘ DiamondC
OOxygen
Oⓘ IlmeniteFe2+TiO3
Oⓘ PyropeMg3Al2(SiO4)3
Oⓘ Garnet GroupX3Z2(SiO4)3
Oⓘ Ilmenite var. Picroilmenite(Fe2+,Mg)TiO3
Oⓘ KopyloviteK2Ti(Si3O9)
MgMagnesium
Mgⓘ PyropeMg3Al2(SiO4)3
Mgⓘ Ilmenite var. Picroilmenite(Fe2+,Mg)TiO3
AlAluminium
Alⓘ PyropeMg3Al2(SiO4)3
SiSilicon
Siⓘ PyropeMg3Al2(SiO4)3
Siⓘ Garnet GroupX3Z2(SiO4)3
Siⓘ KopyloviteK2Ti(Si3O9)
KPotassium
Kⓘ KopyloviteK2Ti(Si3O9)
TiTitanium
Tiⓘ IlmeniteFe2+TiO3
Tiⓘ Ilmenite var. Picroilmenite(Fe2+,Mg)TiO3
Tiⓘ KopyloviteK2Ti(Si3O9)
FeIron
Feⓘ IlmeniteFe2+TiO3
Feⓘ Ilmenite var. Picroilmenite(Fe2+,Mg)TiO3

Other Regions, Features and Areas containing this locality

North AmericaContinent
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

Korolev, N., Kiseeva, E.S., Glazyrin, K., Ma, C. and Howarth, G.H. (2026) Kopylovite, IMA 2025-084. CNMNC Newsletter 89, Mineralogical Magazine, 90, https://doi.org/10.1180/mgm.2026.10199.
Hausel, W.D. (2007) Diamonds & Mantle Source Rocks in the Wyoming Craton (with discussions on the North American Craton & unconventional source terrains). Wyoming State Geological Survey, 93 pages.
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