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Griffithite Locality (South End of Cahuenga Pass), Cahuenga Pass, Hollywood, Hollywood Hills, Los Angeles, Los Angeles County, California, USAi
Regional Level Types
Griffithite Locality (South End of Cahuenga Pass)- not defined -
Cahuenga PassPass
Hollywood- not defined -
Hollywood HillsGroup of Hills
Los AngelesCity
Los Angeles CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
34° 5' 52'' North , 118° 17' 57'' West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~0km
GRN:
N23W71
KΓΆppen climate type:
Csb : Warm-summer Mediterranean climate
Mindat Locality ID:
212258
Long-form identifier:
mindat:1:2:212258:1
GUID (UUID V4):
619a22c6-caa6-462d-99fd-c6ba75589e18


Neuerburg Locality 1, also known as "South End of Cahuenga Pass", is the type locality for griffithite (now = ferrian saponite). The location is essentially the site of the "Hollywood Bowl" near the intersection of North Highland Avenue and Pat Moore Way and is, therefore, only of historical significance.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


4 valid minerals. 1 erroneous literature entry.

Detailed Mineral List:

β“˜ Calcite
Formula: CaCO3
Description: Occurs in veins in basalt.
β“˜ Laumontite
Formula: CaAl2Si4O12 · 4H2O
Habit: Prismatic
Description: Occurs as matter crystals and friable masses in crevices in basalt.
β“˜ Prehnite
Formula: Ca2Al2Si3O10(OH)2
Description: Occurs in veins in basalt.
β“˜ Saponite
Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
References:
Neuerburg, 1951
β“˜ Saponite var. Iron-bearing Saponite
Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Description: This material is a ferrian saponite, not ferroan saponite (Ross, 1946). The mineral is about 78% end-member saponite.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
Group 9 - Silicates
β“˜Prehnite9.DP.20Ca2Al2Si3O10(OH)2
β“˜Saponite9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 Β· nH2O
β“˜var. Iron-bearing Saponite ?9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 Β· nH2O
β“˜Laumontite9.GB.10CaAl2Si4O12 Β· 4H2O

List of minerals for each chemical element

HHydrogen
Hβ“˜ LaumontiteCaAl2Si4O12 · 4H2O
Hβ“˜ PrehniteCa2Al2Si3O10(OH)2
Hβ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Hβ“˜ Saponite var. Iron-bearing SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
CCarbon
Cβ“˜ CalciteCaCO3
OOxygen
Oβ“˜ CalciteCaCO3
Oβ“˜ LaumontiteCaAl2Si4O12 · 4H2O
Oβ“˜ PrehniteCa2Al2Si3O10(OH)2
Oβ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Oβ“˜ Saponite var. Iron-bearing SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
MgMagnesium
Mgβ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Mgβ“˜ Saponite var. Iron-bearing SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
AlAluminium
Alβ“˜ LaumontiteCaAl2Si4O12 · 4H2O
Alβ“˜ PrehniteCa2Al2Si3O10(OH)2
Alβ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Alβ“˜ Saponite var. Iron-bearing SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
SiSilicon
Siβ“˜ LaumontiteCaAl2Si4O12 · 4H2O
Siβ“˜ PrehniteCa2Al2Si3O10(OH)2
Siβ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Siβ“˜ Saponite var. Iron-bearing SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
CaCalcium
Caβ“˜ CalciteCaCO3
Caβ“˜ LaumontiteCaAl2Si4O12 · 4H2O
Caβ“˜ PrehniteCa2Al2Si3O10(OH)2
Caβ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Caβ“˜ Saponite var. Iron-bearing SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
FeIron
Feβ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Feβ“˜ Saponite var. Iron-bearing SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O

Other Regions, Features and Areas containing this locality

North America Plate
Pacific PlateTectonic Plate
USA

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

Larsen, Esper S. and Steiger, G., 1917, Mineralogic Notes, Journal of the Washington Academy of Science, v. 7, p. 11.
Ross, C. S., 1946, Sauconite - a Clay Mineral of the Montmorillonite Group, American Mineralogist, v. 31, p. 411-424.
Neuerberg, George Joseph (1951), Minerals of the eastern Santa Monica Mountains, Los Angeles city: American Mineralogist: 36: 156-160.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 237, 294.
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