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Cahuenga Pass, Hollywood, Hollywood Hills, Los Angeles, Los Angeles County, California, USAi
Regional Level Types
Cahuenga PassPass
Hollywood- not defined -
Hollywood HillsGroup of Hills
Los AngelesCity
Los Angeles CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
34° 7' 28'' North , 118° 20' 34'' West
Latitude & Longitude (decimal):
34.12446,-118.34286
GeoHash:
G#: 9q5f5h1m7
GRN:
N23W71
Type:
Pass
KΓΆppen climate type:
Csb : Warm-summer Mediterranean climate
Mindat Locality ID:
212256
Long-form identifier:
mindat:1:2:212256:7
GUID (UUID V4):
a27a4243-b50c-4150-b225-618cc213a24a


A gap in the Santa Monica Mountains noted for its vesicular basalt with griffithite mineralization. Ross (1946) determined that the griffithite from this location is a ferrian saponite, not a ferroan saponite. The mineral is about 78% saponite.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

12 valid minerals. 2 erroneous literature entries.

Detailed Mineral List:

β“˜ Analcime
Formula: Na(AlSi2O6) · H2O
β“˜ Aragonite
Formula: CaCO3
β“˜ Calcite
Formula: CaCO3
Description: Occurs in veins in basalt.
β“˜ 'Chlorite Group'
β“˜ Ferrosaponite
Formula: Ca0.3(Fe2+,Mg,Fe3+)3((Si,Al)4O10)(OH)2 · 4H2O
Description: Note: The minerals ferrosaponite and ferroan saponite have frequently been mentioned from this locality, but the mineral appears to be a ferrian saponite with about 79% end-member saponite. See Ross (1946).
β“˜ Hematite
Formula: Fe2O3
β“˜ 'Heulandite Subgroup'
Formula: (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
β“˜ Laumontite
Formula: CaAl2Si4O12 · 4H2O
β“˜ Mordenite
Formula: (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
Habit: Capillary; aggregated into clusters.
β“˜ Natrolite
Formula: Na2Al2Si3O10 · 2H2O
Description: Occurs in vesicular basalt.
β“˜ Opal
Formula: SiO2 · nH2O
β“˜ Prehnite
Formula: Ca2Al2Si3O10(OH)2
Description: Occurs in veins in basalt.
β“˜ Pyrite
Formula: FeS2
β“˜ Quartz
Formula: SiO2
β“˜ Quartz var. Chalcedony
Formula: SiO2
β“˜ Saponite
Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
β“˜ Saponite var. Iron-bearing Saponite
Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Description: This is not a ferroan saponite, it is a ferrian saponite and about 78% end-member saponite (Ross, 1946). Occurs in amygdules to 1 inch (2.5 cm) diameter in basalt.
β“˜ 'Stilbite Subgroup'
Formula: M6-7[Al8-9Si27-28O72] · nH2O
Description: Occurs in cavities in basalt.

Gallery:

Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2Oβ“˜ Saponite

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
β“˜Hematite4.CB.05Fe2O3
β“˜Quartz
var. Chalcedony		4.DA.05SiO2
β“˜4.DA.05SiO2
β“˜Opal4.DA.10SiO2 Β· nH2O
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
β“˜Aragonite5.AB.15CaCO3
Group 9 - Silicates
β“˜Prehnite9.DP.20Ca2Al2Si3O10(OH)2
β“˜Ferrosaponite ?9.EC.45Ca0.3(Fe2+,Mg,Fe3+)3((Si,Al)4O10)(OH)2 Β· 4H2O
β“˜Saponite
var. Iron-bearing Saponite ?		9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 Β· nH2O
β“˜9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 Β· nH2O
β“˜Natrolite9.GA.05Na2Al2Si3O10 Β· 2H2O
β“˜Analcime9.GB.05Na(AlSi2O6) Β· H2O
β“˜Laumontite9.GB.10CaAl2Si4O12 Β· 4H2O
β“˜Mordenite9.GD.35(Na2,Ca,K2)4(Al8Si40)O96 Β· 28H2O
Unclassified
β“˜'Heulandite Subgroup'-(Na/Ca/K)5-6[Al8-9 Si27-28 O72] Β· nH2O
β“˜'Stilbite Subgroup'-M6-7[Al8-9Si27-28O72] Β· nH2O
β“˜'Chlorite Group'-

List of minerals for each chemical element

HHydrogen
Hβ“˜ AnalcimeNa(AlSi2O6) · H2O
Hβ“˜ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Hβ“˜ LaumontiteCaAl2Si4O12 · 4H2O
Hβ“˜ Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
Hβ“˜ NatroliteNa2Al2Si3O10 · 2H2O
Hβ“˜ OpalSiO2 · nH2O
Hβ“˜ PrehniteCa2Al2Si3O10(OH)2
Hβ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Hβ“˜ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Hβ“˜ Saponite var. Iron-bearing SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Hβ“˜ FerrosaponiteCa0.3(Fe2+,Mg,Fe3+)3((Si,Al)4O10)(OH)2 · 4H2O
CCarbon
Cβ“˜ AragoniteCaCO3
Cβ“˜ CalciteCaCO3
OOxygen
Oβ“˜ AnalcimeNa(AlSi2O6) · H2O
Oβ“˜ AragoniteCaCO3
Oβ“˜ CalciteCaCO3
Oβ“˜ Quartz var. ChalcedonySiO2
Oβ“˜ HematiteFe2O3
Oβ“˜ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Oβ“˜ LaumontiteCaAl2Si4O12 · 4H2O
Oβ“˜ Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
Oβ“˜ NatroliteNa2Al2Si3O10 · 2H2O
Oβ“˜ OpalSiO2 · nH2O
Oβ“˜ PrehniteCa2Al2Si3O10(OH)2
Oβ“˜ QuartzSiO2
Oβ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Oβ“˜ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Oβ“˜ Saponite var. Iron-bearing SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Oβ“˜ FerrosaponiteCa0.3(Fe2+,Mg,Fe3+)3((Si,Al)4O10)(OH)2 · 4H2O
NaSodium
Naβ“˜ AnalcimeNa(AlSi2O6) · H2O
Naβ“˜ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Naβ“˜ Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
Naβ“˜ NatroliteNa2Al2Si3O10 · 2H2O
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
Mgβ“˜ FerrosaponiteCa0.3(Fe2+,Mg,Fe3+)3((Si,Al)4O10)(OH)2 · 4H2O
AlAluminium
Alβ“˜ AnalcimeNa(AlSi2O6) · H2O
Alβ“˜ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Alβ“˜ LaumontiteCaAl2Si4O12 · 4H2O
Alβ“˜ Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
Alβ“˜ NatroliteNa2Al2Si3O10 · 2H2O
Alβ“˜ PrehniteCa2Al2Si3O10(OH)2
Alβ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Alβ“˜ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Alβ“˜ Saponite var. Iron-bearing SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Alβ“˜ FerrosaponiteCa0.3(Fe2+,Mg,Fe3+)3((Si,Al)4O10)(OH)2 · 4H2O
SiSilicon
Siβ“˜ AnalcimeNa(AlSi2O6) · H2O
Siβ“˜ Quartz var. ChalcedonySiO2
Siβ“˜ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Siβ“˜ LaumontiteCaAl2Si4O12 · 4H2O
Siβ“˜ Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
Siβ“˜ NatroliteNa2Al2Si3O10 · 2H2O
Siβ“˜ OpalSiO2 · nH2O
Siβ“˜ PrehniteCa2Al2Si3O10(OH)2
Siβ“˜ QuartzSiO2
Siβ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Siβ“˜ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Siβ“˜ Saponite var. Iron-bearing SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Siβ“˜ FerrosaponiteCa0.3(Fe2+,Mg,Fe3+)3((Si,Al)4O10)(OH)2 · 4H2O
SSulfur
Sβ“˜ PyriteFeS2
KPotassium
Kβ“˜ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Kβ“˜ Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
CaCalcium
Caβ“˜ AragoniteCaCO3
Caβ“˜ CalciteCaCO3
Caβ“˜ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Caβ“˜ LaumontiteCaAl2Si4O12 · 4H2O
Caβ“˜ Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
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
Caβ“˜ FerrosaponiteCa0.3(Fe2+,Mg,Fe3+)3((Si,Al)4O10)(OH)2 · 4H2O
FeIron
Feβ“˜ HematiteFe2O3
Feβ“˜ PyriteFeS2
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
Feβ“˜ FerrosaponiteCa0.3(Fe2+,Mg,Fe3+)3((Si,Al)4O10)(OH)2 · 4H2O

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Cahuenga_Pass
Wikidata ID:Q2982040

Localities in this Region

USA

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

Ross, C.S. (1946) Sauconite - a Clay Mineral of the Montmorillonite Group, American Mineralogist: 31(9-10): 411-424. http://www.minsocam.org/ammin/AM31/AM31_411.pdf
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