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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Moore Creek, Idaho City, Idaho City Mining District, Boise County, Idaho, USA i
Regional Level Types
Moore Creek Creek
Idaho City City
Idaho City Mining District Mining District
Boise County County
Idaho State
USA Country

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Latitude & Longitude (WGS84):

43° 49' 43'' North , 115° 50' 1'' West

Latitude & Longitude (decimal):

43.82861,-115.83361

G#: 9rv9k4u81

Type:

Köppen climate type:

Dsb : Warm, dry-summer continental climate

Nearest Settlements:

Place	Population	Distance
Idaho City	474 (2017)	0.1km
Garden Valley	394 (2011)	30.5km
Horseshoe Bend	688 (2017)	30.7km
Crouch	161 (2017)	33.7km
Hidden Spring	2,280 (2017)	35.5km

Nearest Clubs:
Local clubs are the best way to get access to collecting localities

Club	Location	Distance
Idaho Gem Club, Inc.	Boise, Idaho	38km
Southeast Idaho Gem and Mineral Society	Boise, Idaho	38km

Mindat Locality ID:

28059

Long-form identifier:

mindat:1:2:28059:3

GUID (UUID V4):

0

No description has been added for this locality. Can you add one?

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ var. Fire Opal

1 valid mineral.

Detailed Mineral List:

Formula: SiO₂ · nH₂O

References:

Dake, H. C. (1956) Northwest Gem Trails - A Field Guide for the Gem Hunter, Mineral Collector and Tourist (2nd ed.) Gembooks.

ⓘ Opal var. Fire Opal

Formula: SiO₂ · nH₂O

References:

Dake, H. C. (1956) Northwest Gem Trails - A Field Guide for the Gem Hunter, Mineral Collector and Tourist (2nd ed.) Gembooks.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘ	Opal	4.DA.10	SiO₂ · nH₂O
ⓘ	var. Fire Opal	4.DA.10	SiO₂ · nH₂O

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Opal	SiO₂ · nH₂O
H	ⓘ Opal var. Fire Opal	SiO₂ · nH₂O
O	Oxygen
O	ⓘ Opal	SiO₂ · nH₂O
O	ⓘ Opal var. Fire Opal	SiO₂ · nH₂O
Si	Silicon
Si	ⓘ Opal	SiO₂ · nH₂O
Si	ⓘ Opal var. Fire Opal	SiO₂ · nH₂O

Other Regions, Features and Areas containing this locality

North AmericaContinent

Rocky MountainsMountain Range

North America PlateTectonic Plate

Great Falls DomainDomain
Idaho BatholithVolcanic Arc

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.

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