Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Interstate 420 roadcuts, Olympia, Thurston County, Washington, USAi
Regional Level Types
Interstate 420 roadcutsGroup of Road Cuttings
OlympiaCity
Thurston CountyCounty
WashingtonState
USACountry

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Latitude & Longitude (WGS84):
47° 2' North , 122° 53' West
Latitude & Longitude (decimal):
47.03333,-122.88333
GRN:
N32W61
Type:
Group of Road Cuttings
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Olympia50,302 (2017)1.4km
Tumwater19,190 (2017)3.5km
Lacey46,409 (2017)4.6km
Tanglewilde5,892 (2017)7.9km
Tanglewilde-Thompson Place5,892 (2011)8.0km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Washington Agate and Mineral SocietyOlympia, Washington1km
Puyallup Valley Gem & Mineral ClubPuyallup, Washington48km
Mindat Locality ID:
15833
Long-form identifier:
mindat:1:2:15833:7
GUID (UUID V4):
0


I-420 roadcuts, west of Olympia.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


1 valid mineral.

Detailed Mineral List:

ⓘ Calcite
Formula: CaCO3
Habit: scalenohedrons to 1" in diameter
Colour: colorless, pale yellow

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3

List of minerals for each chemical element

CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ CalciteCaCO3
CaCalcium
Caⓘ CalciteCaCO3

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

Cannon, Bart (1975) Minerals of Washington. Cordilleran, Mercer Island, WA.pp.65-66
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