IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for Educators
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Pacoima Canyon pegmatite locality (Pacoima Canyon Allanite pegmatite; Allanite locality), Pacoima Canyon, San Gabriel Mts, Los Angeles Co., California, USA

This page is currently not sponsored. Click here to sponsor this page.
Key
Lock Map
Latitude & Longitude (WGS84): 34° 21' North , 118° 23' West
Latitude & Longitude (decimal): 34.35000,-118.38333
GeoHash:G#: 9q5g6j5zk
Köppen climate type:Csb : Warm-summer Mediterranean climate


A REE-U-Th occurrence located in the center W½W½ sec. 5, T3N, R14W, SBM.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


10 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Reference: Neuerberg, George Joseph (1954), Allanite pegmatite, San Gabriel Mountains, Los Angeles County, California: American Mineralogist: 39: 832; Sharp, W.E. (1959) Minerals from Los Angeles County, California. Printed privately, Los Angeles, California: 31-33, 87; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 361.
Albite var: Oligoclase
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Reference: Neuerberg, George Joseph (1954), Allanite pegmatite, San Gabriel Mountains, Los Angeles County, California: American Mineralogist: 39: 832; Sharp, W.E. (1959) Minerals from Los Angeles County, California. Printed privately, Los Angeles, California: 31-33, 87; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 361.
Allanite-(Ce)
Formula: {CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Description: Occurs as abundant rough tabular crystals & grains to 2 or 3 inches (5.0-7.5 cm) in a pegmatite.
Reference: Neuerberg, George Joseph (1954), Allanite pegmatite, San Gabriel Mountains, Los Angeles County, California: American Mineralogist: 39: 833; Patchick, Paul F. (1955), A remarkable occurrence of allanite and zircon crystals from a southern California pegmatite: Rocks & Minerals: 30(5&6): 237; Frondel, J.W. (1964) Variation in some rare earths in allanite. American Mineralogist: 49: 1157; Dollase, W.A. (1971) Refinement of the crystal structures of epidote, allanite and hancockite. American Mineralogist: 56: 447.
'Apatite'
Description: Occurs as small euhedral crystals.
Reference: Neuerberg, George Joseph (1954), Allanite pegmatite, San Gabriel Mountains, Los Angeles County, California: American Mineralogist: 39: 833; Patchick, Paul F. (1955), A remarkable occurrence of allanite and zircon crystals from a southern California pegmatite: Rocks & Minerals: 30(5&6): 237-246; Sharp, W.E. (1959) Minerals from Los Angeles County, California. Printed privately, Los Angeles, California: 31-33, 87; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 316, 486.
Beryl
Formula: Be3Al2(Si6O18)
Colour: Greenish white
Description: Occurs as small pale crystals.
Reference: Neuerberg, George Joseph (1954), Allanite pegmatite, San Gabriel Mountains, Los Angeles County, California: American Mineralogist: 39: 832; Sharp, W.E. (1959) Minerals from Los Angeles County, California. Printed privately, Los Angeles, California: 31-33, 87; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 446.
'Biotite'
Description: Occurs as crystals 15 cm x 1.5 meters.
Reference: Rocks & Minerals (1955): 30(5-6): 237-246; Neuerberg, George Joseph (1954), Allanite pegmatite, San Gabriel Mountains, Los Angeles County, California: American Mineralogist: 39: 832; Hoda, S.N. and Hood (1972): 343; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 428.
'Feldspar Group'
Reference: Patchick, Paul F. (1955), A remarkable occurrence of allanite and zircon crystals from a southern California pegmatite: Rocks & Minerals: 30(5&6): 237-246.
'Feldspar Group var: Perthite'
Reference: Patchick, Paul F. (1955), A remarkable occurrence of allanite and zircon crystals from a southern California pegmatite: Rocks & Minerals: 30(5&6): 237-246.
Fluorapatite
Formula: Ca5(PO4)3F
Reference: Van King
'Hornblende'
Habit: Up to one foot in length
Description: Rock forming. Occurs as euhedral crystals in metamorphic rocks.
Reference: Rocks & Minerals (1955): 30(5-6): 237-246; Neuerberg, George Joseph (1954), Allanite pegmatite, San Gabriel Mountains, Los Angeles County, California: American Mineralogist: 39: 832; Sharp, W.E. (1959) Minerals from Los Angeles County, California. Printed privately, Los Angeles, California: 31-33, 87; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 401.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Patchick, Paul F. (1955), A remarkable occurrence of allanite and zircon crystals from a southern California pegmatite: Rocks & Minerals: 30(5&6): 237-246.
Microcline
Formula: K(AlSi3O8)
Reference: Van King
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Patchick, Paul F. (1955), A remarkable occurrence of allanite and zircon crystals from a southern California pegmatite: Rocks & Minerals: 30(5&6): 237-246.
'Pegmatite'
Reference: U.S. Geological Survey, (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Quartz
Formula: SiO2
Reference: Patchick, Paul F. (1955), A remarkable occurrence of allanite and zircon crystals from a southern California pegmatite: Rocks & Minerals: 30(5&6): 237-246.
Thorite
Formula: Th(SiO4)
Description: Occurs as well-formed crystals.
Reference: Neuerberg, George Joseph (1954), Allanite pegmatite, San Gabriel Mountains, Los Angeles County, California: American Mineralogist: 39: 834; Sharp, W.E. (1959) Minerals from Los Angeles County, California. Printed privately, Los Angeles, California: 31-33, 87; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 462.
Zircon
Formula: Zr(SiO4)
Colour: Pinkish
Fluorescence: pale yellow, strong orange
Description: Abundant transparent crystals in pegmatite.
Reference: Neuerberg, George Joseph (1954), Allanite pegmatite, San Gabriel Mountains, Los Angeles County, California: American Mineralogist: 39: 833; Patchick, Paul F. (1955), A remarkable occurrence of allanite and zircon crystals from a southern California pegmatite: Rocks & Minerals: 30(5&6): 237; Sharp, W.E. (1959) Minerals from Los Angeles County, California. Printed privately, Los Angeles, California: 31-33, 87.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
'Magnetite'4.BB.05Fe2+Fe3+2O4
'Quartz'4.DA.05SiO2
Group 8 - Phosphates, Arsenates and Vanadates
'Fluorapatite'8.BN.05Ca5(PO4)3F
Group 9 - Silicates
'Albite'9.FA.35Na(AlSi3O8)
var: Oligoclase9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
'Allanite-(Ce)'9.BG.05b{CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
'Beryl'9.CJ.05Be3Al2(Si6O18)
'Microcline'9.FA.30K(AlSi3O8)
'Muscovite'9.EC.15KAl2(AlSi3O10)(OH)2
'Thorite'9.AD.30Th(SiO4)
'Zircon'9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Biotite'-
'Feldspar Group'-
'var: Perthite'-
'Hornblende'-
Pegmatite-

List of minerals arranged by Dana 8th Edition classification

Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Thorite51.5.2.3Th(SiO4)
Zircon51.5.2.1Zr(SiO4)
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Allanite-(Ce)58.2.1a.1{CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Beryl61.1.1.1Be3Al2(Si6O18)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Microcline76.1.1.5K(AlSi3O8)
Unclassified Minerals, Rocks, etc.
Albite
var: Oligoclase
-(Na,Ca)[Al(Si,Al)Si2O8]
'Apatite'-
'Biotite'-
'Feldspar Group'-
'var: Perthite'-
'Hornblende'-
'Pegmatite'-

List of minerals for each chemical element

HHydrogen
H Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
BeBeryllium
Be BerylBe3Al2(Si6O18)
OOxygen
O AlbiteNa(AlSi3O8)
O Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
O BerylBe3Al2(Si6O18)
O FluorapatiteCa5(PO4)3F
O MagnetiteFe2+Fe23+O4
O MicroclineK(AlSi3O8)
O MuscoviteKAl2(AlSi3O10)(OH)2
O Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
O QuartzSiO2
O ThoriteTh(SiO4)
O ZirconZr(SiO4)
FFluorine
F FluorapatiteCa5(PO4)3F
NaSodium
Na AlbiteNa(AlSi3O8)
Na Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
AlAluminium
Al AlbiteNa(AlSi3O8)
Al Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Al BerylBe3Al2(Si6O18)
Al MicroclineK(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
SiSilicon
Si AlbiteNa(AlSi3O8)
Si Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Si BerylBe3Al2(Si6O18)
Si MicroclineK(AlSi3O8)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
Si QuartzSiO2
Si ThoriteTh(SiO4)
Si ZirconZr(SiO4)
PPhosphorus
P FluorapatiteCa5(PO4)3F
KPotassium
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Ca FluorapatiteCa5(PO4)3F
Ca Albite (var: Oligoclase)(Na,Ca)[Al(Si,Al)Si2O8]
FeIron
Fe Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Fe MagnetiteFe2+Fe23+O4
ZrZirconium
Zr ZirconZr(SiO4)
CeCerium
Ce Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
ThThorium
Th ThoriteTh(SiO4)

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Tertiary - Lopingian
2.588 - 259.1 Ma



ID: 2914707
Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges)

Age: Phanerozoic (2.588 - 259.1 Ma)

Stratigraphic Name: Atolia Quartz Monzonite; Coxcomb Granodiorite; Holcomb Quartz Monzonite; Lar Quartz Diorite; Liebre Quartz Monzonite; Mount Pinos Granite; Palms Granite; Sands Granite; Teutonia Quartz Monzonite; White Tank Quartz Monzonite; Vermont Quartz Diorite; Cadiz Valley Batholith; Barcroft Granodiorite; Bass Lake Tonalite; Big Baldy Granite; Boundary Peak Granite; Bridalveil Granite; Burnside Lake Adamellite; Cabin Granodiorite; Cactus Point Granite; Carson Pass Tonalite; Cathedral Peak Granite; Clover Creek Granodiorite; Cottonwood Adamellite; Cow Creek Granodiorite; Dinkey Creek Granodiorite; Ebbetts Pass Granodiorite; El Capitan Granite; Evolution Basin Alaskite; Giant Forest Granodiorite; Half Dome Quartz Monzonite; Hunter Mountain Quartz Monzonite; Inconsolable Granodiorite; Isabella Granodiorite; Johnson Granite Porphyry; Knowles Granodiorite; Lake Edison Granodiorite; Lamarck Granodiorite; Leaning Tower Quartz Monzonite; Lebec Quartz Monzonite; Leidy Adamellite; Lodgepole Granite; Lookout Peak Tonalite; McAfee Adamellite; Mitchell Peak Granodiorite; Mono Creek Granite; Mount Clark Granite; Mount Givens Granodiorite; Pear Lake Quartz Monzonite; Paradise Granodiorite; Pellesier Granite; Pohono Granodiorite; Potwisha Quartz Diorite; Round Valley Peak Granodiorite; Sacatar Quartz Diorite; Sage Hen Adamellite; Sentinel Granodiorite; Stanislaus Meadow Adamellite; Taft Granite; Tamarack Leuco-Adamellite; Tejon Lookout Granite; Tinemaha Granodiorite; Tungsten Hills Quartz Monzonite; Ward Mountain Trondhjemite; Weaver Lake Quartz Monzonite; Wheeler Crest Quartz Monzonite; Whitney Granodiorite. Hunter Mountain Batholith; Inyo Batholith; Sierra Nevada Batholith. Bald Rock Pluton; Bucks Lake Pluton; Bullfrog Pluton; Cartridge Pass Pluton; Cascade Pluton; Dragon Pluton; Grizzly Pluton; Independence Pluton; Merrimac Pluton; Paiute Monument Pluton; Papoose Flat Pluton; Pat Keyes Pluton; Sage Hen Flat Pluton; Santa Rita Flat Pluton; Swedes Flat Pluton; Tuolumne Intrusive Suite; John Muir Intrusive Suite; Shaver Intrusive Suite; Palisade Crest Intrusive Suite; Scheelite Intrusive Suite; Fine Gold Intrusive Suite; Soldier Pass Intrusive Suite; Mount Whitney Intrusive Suite

Description: Mesozoic granite, quartz monzonite, granodiorite, and quartz diorite

Comments: Sierra Nevada, Death Valley area, Transverse Ranges and Mojave Desert. Primarily granodiorite, tonalite, quartz monzonite, and granite ranging in age from Late Triassic to Late Cretaceous. Includes some rocks as old as Permian and possibly a few as young as Tertiary. Three main periods of emplacement (Triassic, Jurassic, and Cretaceous); wide variety of rock types Original map source: Saucedo, G.J., Bedford, D.R., Raines, G.L., Miller, R.J., and Wentworth, C.M., 2000, GIS Data for the Geologic Map of California, California Department of Conservation, Division of Mines and Geology, CD-ROM 2000-07, scale 1:750,000.

Lithology: Major:{granodiorite}, Minor:{granite,tonalite,quartz diorite,quartz monzonite}, Incidental:{diorite, quartz syenite, quartz monzodiorite, gabbro, trondhjemite, monzonite, monzodiorite, pegmatite, alaskite, aplite}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Mesozoic
66 - 251.902 Ma



ID: 2667929
Granodiorite

Age: Mesozoic (66 - 251.902 Ma)

Description: Average composition is quartz diorite using IUGA classification (Streckheisen, 1973), quartz 16 percent, plagioclase 62 percent, orthoclase 3 percent, biotite 11 percent, hornblende 6 percent; includes some rocks mapped as Lowe Granodiorite and Wilson Diorite of Miller (1934); mostly massive, but commonly gneissoid near contacts with older rocks; locally carries large inclusions and pendants of gneiss and Placerita Formation metasediments. (San Fernando and Sunland 7.5’ quadrangles; Oakeshott, 1958)

Reference: Alvarez, R.M. and K.R. Bovard. Preliminary Geologic Map of the Los Angeles 30' x 60' Quadrangle, Southern California. U.S. Geological Survey Open-File Report 2005-1019. [112]

Cretaceous
66 - 145 Ma



ID: 3192002
Mesozoic intrusive rocks

Age: Cretaceous (66 - 145 Ma)

Lithology: Intrusive igneous rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Neuerberg, George Joseph (1954), Allanite pegmatite, San Gabriel Mountains, Los Angeles County, California: American Mineralogist: 39: 832, 833, 834.
Patchick, Paul F. (1955), A remarkable occurrence of allanite and zircon crystals from a southern California pegmatite: Rocks & Minerals: 30(5&6): 237-246.
Sharp, W.E. (1959) Minerals from Los Angeles County, California. Printed privately, Los Angeles, California: 31-33, 87.
Frondel, J.W. (1964) Variation in some rare earths in allanite. American Mineralogist: 49: 1159-1177.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 366.
Dollase, W.A. (1971) Refinement of the crystal structures of epidote, allanite and hancockite. American Mineralogist: 56: 447-464.
Hoda, S.N. and Hood (1972): 343.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 316, 361, 401, 428, 446, 461, 462, 486.


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.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 18, 2018 01:37:49 Page generated: September 12, 2018 08:36:39
Go to top of page