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Altoona Mining District, Trinity Mountains, Klamath Mountains, Trinity County, California, USAi
Regional Level Types
Altoona Mining DistrictMining District
Trinity MountainsMountain Range
Klamath MountainsMountain Range
Trinity CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
40° North , 123° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~93km
Mindat Locality ID:
215531
Long-form identifier:
mindat:1:2:215531:2
GUID (UUID V4):
0


A Hg-Cr-Mn mining area located in the Trinity Mountains subrange of the Klamath Mountains, along Crow Creek, a tributary of the East Fork Trinity River. Named after the princpal mine in the district.

NOTE: The MRDS files contain data which are seemingly confusing this area with the New Almaden area, quite a distance away in another county. Also, the MRDS files present two terminologies for the locations within this district. Some are stated as being in the "Altoona District" in the Mining District data field, while others are stated to be in the "Crow Creek area" in the same data field. While the latter is factual, it conflicts with the Altoona District terminology since the locations are not separated geographically. There is no "Altoona District" listed in Murdoch & Webb (1966).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

17 valid minerals.

Rock Types Recorded


Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

'Amphibole Asbestos'
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Description: Occurs as a secondary replacement product.
Annabergite
Formula: Ni3(AsO4)2 · 8H2O
Description: Conspicuous.
'Asbestos'
Azurite
Formula: Cu3(CO3)2(OH)2
Baryte
Formula: BaSO4
Chalcopyrite
Formula: CuFeS2
Chromite
Formula: Fe2+Cr3+2O4
Localities: Reported from at least 15 localities in this region.
Cinnabar
Formula: HgS
Localities: Reported from at least 8 localities in this region.
'Clay minerals'
Jacobsite
Formula: Mn2+Fe3+2O4
Magnesite
Formula: MgCO3
Malachite
Formula: Cu2(CO3)(OH)2
Native Gold
Formula: Au
Native Mercury
Formula: Hg
Pyrite
Formula: FeS2
Quartz
Formula: SiO2
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
Stibnite
Formula: Sb2S3
Tremolite
Formula: ◻Ca2Mg5(Si8O22)(OH)2
Description: Occurs as lenses 17.5 to 75.0 cm wide.
Uvarovite
Formula: Ca3Cr3+2(SiO4)3

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Native Gold1.AA.05Au
Native Mercury1.AD.05Hg
Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Cinnabar2.CD.15aHgS
Stibnite2.DB.05Sb2S3
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Jacobsite4.BB.05Mn2+Fe3+2O4
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Magnesite5.AB.05MgCO3
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Azurite5.BA.05Cu3(CO3)2(OH)2
Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Group 8 - Phosphates, Arsenates and Vanadates
Annabergite8.CE.40Ni3(AsO4)2 · 8H2O
Group 9 - Silicates
Uvarovite9.AD.25Ca3Cr3+2(SiO4)3
Tremolite9.DE.10◻Ca2Mg5(Si8O22)(OH)2
Unclassified
'Asbestos'-
'Clay minerals'-
'Serpentine Subgroup'-D3[Si2O5](OH)4
'Amphibole Asbestos'-

List of minerals for each chemical element

HHydrogen
H AnnabergiteNi3(AsO4)2 · 8H2O
H AzuriteCu3(CO3)2(OH)2
H MalachiteCu2(CO3)(OH)2
H Tremolite◻Ca2Mg5(Si8O22)(OH)2
H Serpentine SubgroupD3[Si2O5](OH)4
CCarbon
C AnkeriteCa(Fe2+,Mg)(CO3)2
C AzuriteCu3(CO3)2(OH)2
C MagnesiteMgCO3
C MalachiteCu2(CO3)(OH)2
OOxygen
O AnkeriteCa(Fe2+,Mg)(CO3)2
O AnnabergiteNi3(AsO4)2 · 8H2O
O AzuriteCu3(CO3)2(OH)2
O BaryteBaSO4
O ChromiteFe2+Cr23+O4
O JacobsiteMn2+Fe23+O4
O MagnesiteMgCO3
O MalachiteCu2(CO3)(OH)2
O QuartzSiO2
O Tremolite◻Ca2Mg5(Si8O22)(OH)2
O UvaroviteCa3Cr23+(SiO4)3
O Serpentine SubgroupD3[Si2O5](OH)4
MgMagnesium
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg MagnesiteMgCO3
Mg Tremolite◻Ca2Mg5(Si8O22)(OH)2
SiSilicon
Si QuartzSiO2
Si Tremolite◻Ca2Mg5(Si8O22)(OH)2
Si UvaroviteCa3Cr23+(SiO4)3
Si Serpentine SubgroupD3[Si2O5](OH)4
SSulfur
S BaryteBaSO4
S ChalcopyriteCuFeS2
S CinnabarHgS
S PyriteFeS2
S StibniteSb2S3
CaCalcium
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca Tremolite◻Ca2Mg5(Si8O22)(OH)2
Ca UvaroviteCa3Cr23+(SiO4)3
CrChromium
Cr ChromiteFe2+Cr23+O4
Cr UvaroviteCa3Cr23+(SiO4)3
MnManganese
Mn JacobsiteMn2+Fe23+O4
FeIron
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe ChalcopyriteCuFeS2
Fe ChromiteFe2+Cr23+O4
Fe JacobsiteMn2+Fe23+O4
Fe PyriteFeS2
NiNickel
Ni AnnabergiteNi3(AsO4)2 · 8H2O
CuCopper
Cu AzuriteCu3(CO3)2(OH)2
Cu ChalcopyriteCuFeS2
Cu MalachiteCu2(CO3)(OH)2
AsArsenic
As AnnabergiteNi3(AsO4)2 · 8H2O
SbAntimony
Sb StibniteSb2S3
BaBarium
Ba BaryteBaSO4
AuGold
Au Native GoldAu
HgMercury
Hg CinnabarHgS
Hg Native MercuryHg

Localities in this Region

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.

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