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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
Köppen 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:

ⓘ Calcite
Formula: CaCO3
Description: Occurs in veins in basalt.
ⓘ Laumontite
Formula: CaAl2Si4O12 · 4H2O
Habit: Prismatic
Description: Occurs as matter crystals and friable masses in crevices in basalt.
ⓘ Prehnite
Formula: Ca2Al2Si3O10(OH)2
Description: Occurs in veins in basalt.
ⓘ Saponite
Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
References:
Neuerburg, 1951
ⓘ 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
ⓘCalcite5.AB.05CaCO3
Group 9 - Silicates
ⓘPrehnite9.DP.20Ca2Al2Si3O10(OH)2
ⓘSaponite9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
ⓘvar. Iron-bearing Saponite ?9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
ⓘLaumontite9.GB.10CaAl2Si4O12 · 4H2O

List of minerals for each chemical element

HHydrogen
Hⓘ LaumontiteCaAl2Si4O12 · 4H2O
Hⓘ PrehniteCa2Al2Si3O10(OH)2
Hⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Hⓘ Saponite var. Iron-bearing SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ CalciteCaCO3
Oⓘ LaumontiteCaAl2Si4O12 · 4H2O
Oⓘ PrehniteCa2Al2Si3O10(OH)2
Oⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Oⓘ Saponite var. Iron-bearing SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
MgMagnesium
Mgⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Mgⓘ Saponite var. Iron-bearing SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
AlAluminium
Alⓘ LaumontiteCaAl2Si4O12 · 4H2O
Alⓘ PrehniteCa2Al2Si3O10(OH)2
Alⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Alⓘ Saponite var. Iron-bearing SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
SiSilicon
Siⓘ LaumontiteCaAl2Si4O12 · 4H2O
Siⓘ PrehniteCa2Al2Si3O10(OH)2
Siⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Siⓘ Saponite var. Iron-bearing SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ LaumontiteCaAl2Si4O12 · 4H2O
Caⓘ PrehniteCa2Al2Si3O10(OH)2
Caⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Caⓘ Saponite var. Iron-bearing SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
FeIron
Feⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Feⓘ 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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