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Chino underground mine, Chino Quarry, Chino Hill, Crestmore quarries, Crestmore, Jurupa Valley, Riverside County, California, USAi
Regional Level Types
Chino underground mineMine (Flooded)
Chino QuarryQuarry
Chino HillHill
Crestmore quarriesGroup of Quarries
CrestmoreTown
Jurupa ValleyCity
Riverside CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
34° North , 117° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~1km
GRN:
N23W70
Type:
Mine (Flooded) - last checked 2023
KΓΆppen climate type:
Csa : Hot-summer Mediterranean climate
Mindat Locality ID:
134577
Long-form identifier:
mindat:1:2:134577:6
GUID (UUID V4):
0ff383f0-9f6f-4ab9-9382-b51f20eb0323


This underground mine was started in 1930 and operated until 1986. This mine employed the block and cave method until 1954, then used the room and pillar method until 1986, and included 8 miles (ca. 13 km) of drifts and 5 miles (ca. 8 km) of raises. The underground workings are now filled with water and inaccessible.

Mineralization is hosted in the Chino Limestone.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


12 valid minerals.

Detailed Mineral List:

β“˜ Arsenopyrite
Formula: FeAsS
β“˜ Azurite
Formula: Cu3(CO3)2(OH)2
β“˜ Bornite
Formula: Cu5FeS4
β“˜ Calcite
Formula: CaCO3
β“˜ 'Garnet Group'
Formula: X3Z2(SiO4)3
β“˜ LΓΆllingite
Formula: FeAs2
β“˜ Molybdenite
Formula: MoS2
Description: Occurs in garnet rock.
β“˜ Montmorillonite
Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Colour: White
Description: Occurs as soft, waxy, clay-like material associated with prehnite and calcite in a 4 inch vein along a N30E drift on the 700 foot level.
β“˜ Periclase
Formula: MgO
Description: Occurs in limestone.
β“˜ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Description: Occurs as specimens to 4 cm diameter.
β“˜ Prehnite
Formula: Ca2Al2Si3O10(OH)2
β“˜ Pyrrhotite
Formula: Fe1-xS
Description: Occurred here in masses weighing more than 500 pounds (230 kg), sometimes associated with "black jack" sphalerite.
β“˜ Sphalerite
Formula: ZnS
Colour: Black

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Bornite2.BA.15Cu5FeS4
β“˜Sphalerite2.CB.05aZnS
β“˜Pyrrhotite2.CC.10Fe1-xS
β“˜Molybdenite2.EA.30MoS2
β“˜LΓΆllingite2.EB.15aFeAs2
β“˜Arsenopyrite2.EB.20FeAsS
Group 4 - Oxides and Hydroxides
β“˜Periclase4.AB.25MgO
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
β“˜Azurite5.BA.05Cu3(CO3)2(OH)2
Group 9 - Silicates
β“˜Prehnite9.DP.20Ca2Al2Si3O10(OH)2
β“˜Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
β“˜Montmorillonite9.EC.40(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 Β· nH2O
Unclassified
β“˜'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

HHydrogen
Hβ“˜ AzuriteCu3(CO3)2(OH)2
Hβ“˜ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Hβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Hβ“˜ PrehniteCa2Al2Si3O10(OH)2
CCarbon
Cβ“˜ AzuriteCu3(CO3)2(OH)2
Cβ“˜ CalciteCaCO3
OOxygen
Oβ“˜ AzuriteCu3(CO3)2(OH)2
Oβ“˜ CalciteCaCO3
Oβ“˜ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Oβ“˜ PericlaseMgO
Oβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Oβ“˜ PrehniteCa2Al2Si3O10(OH)2
Oβ“˜ Garnet GroupX3Z2(SiO4)3
NaSodium
Naβ“˜ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
MgMagnesium
Mgβ“˜ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Mgβ“˜ PericlaseMgO
Mgβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
AlAluminium
Alβ“˜ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Alβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Alβ“˜ PrehniteCa2Al2Si3O10(OH)2
SiSilicon
Siβ“˜ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Siβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Siβ“˜ PrehniteCa2Al2Si3O10(OH)2
Siβ“˜ Garnet GroupX3Z2(SiO4)3
SSulfur
Sβ“˜ ArsenopyriteFeAsS
Sβ“˜ BorniteCu5FeS4
Sβ“˜ MolybdeniteMoS2
Sβ“˜ PyrrhotiteFe1-xS
Sβ“˜ SphaleriteZnS
KPotassium
Kβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ CalciteCaCO3
Caβ“˜ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Caβ“˜ PrehniteCa2Al2Si3O10(OH)2
FeIron
Feβ“˜ ArsenopyriteFeAsS
Feβ“˜ BorniteCu5FeS4
Feβ“˜ LΓΆllingiteFeAs2
Feβ“˜ PyrrhotiteFe1-xS
CuCopper
Cuβ“˜ AzuriteCu3(CO3)2(OH)2
Cuβ“˜ BorniteCu5FeS4
ZnZinc
Znβ“˜ SphaleriteZnS
AsArsenic
Asβ“˜ ArsenopyriteFeAsS
Asβ“˜ LΓΆllingiteFeAs2
MoMolybdenum
Moβ“˜ MolybdeniteMoS2

Other Regions, Features and Areas containing this locality

North America Plate
Pacific 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

Woodford, A.O., Crippen, R.A., and Garner, K.B. (1941) Section Across Commercial Quarry, Crestmore, California. American Mineralogist: 26: 352-381.
[1]Forrester, Curt (2004) Large Clintonite Crystals from the Crestmore Quarry, Riverside, California, in July - August 2004. The Mineralogical Record, 35 (4) 325-330
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