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Allanite prospect (Keeney; Allanite Keeney prospect), Ramona area, Ramona, San Diego Co., California, USA

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Latitude & Longitude (WGS84): 32° 58' 35'' North , 116° 46' 52'' West
Latitude & Longitude (decimal): 32.97639,-116.78111
GeoHash:G#: 9mugwe4t6
Locality type:Prospect
Köppen climate type:Csa : Hot-summer Mediterranean climate


A U-Th-REE prospect located in the NW¼NE¼ sec. 9, T14S, R2E, SBM, 7 miles SE of Ramona.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


Detailed Mineral List:

'Allanite Group'
Formula: {A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Reference: Weber, F.H., Jr. (1963a) Mines and mineral resources of San Diego County, California. California Division of Mines and Geology County Report 3, 309 pp.: No. 472: 281; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 486.

List of minerals arranged by Strunz 10th Edition classification

Unclassified Minerals, Rocks, etc.
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)

List of minerals arranged by Dana 8th Edition classification

Unclassified Minerals, Rocks, etc.
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)

List of minerals for each chemical element

HHydrogen
H Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
OOxygen
O Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
SiSilicon
Si Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)

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

Late Cretaceous - Middle Jurassic
66 - 174.1 Ma



ID: 2897782
Mesozoic granitic rocks, unit 2 (Peninsular Ranges)

Age: Mesozoic (66 - 174.1 Ma)

Stratigraphic Name: Bonsall Tonalite; Bradley Granodiorite; Cactus Quartz Monzonite; Cajalco Quartz Monzonite; Corona Hornblende Granodiorite Porphyry; Domenigoni Valley Granodiorite; Escondido Creek Leucogranodiorite; Estelle Tonalite; Fargo Canyon Diorite; Green Valley Tonalite; Home Gardens Quartz Monzonite Porphyry; Indian Mountain Leucogranodiorite; Lakeview Mountain Tonalite; Lake Wolford Leucogranodiorite; La Sierra Tonalite; Mount Hole Granodiorite; Rattlesnake Granite; Roblar Leucogranite; San Jacinto Granodiorite; Stonewall Quartz Diorite; Woodson Mountain Granodiorite

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

Comments: Peninsular Ranges. Primarily tonalite, granodiorite, and minor quartz monzonite and granite. Emplacement ages mostly 80 to 105 Ma in eastern part of area and 105 to 140 Ma in western part; minor Jurassic rocks in central part 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:{tonalite}, Minor:{quartz diorite,granodiorite,quartz monzonite}, Incidental:{granite, pegmatite}

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]

Cretaceous
66 - 145 Ma



ID: 3186295
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]

Early Cretaceous
100.5 - 145 Ma



ID: 3125788
Tonalite of Alpine

Age: Early Cretaceous (100.5 - 145 Ma)

Description: Biotite-hornblende tonalite, lesser quartz diorite, and scarce granodioritic tonalite. Medium to coarse grained; moderately to strongly foliated; mafic inclusions. Average color index 30. Unit is heterogeneous in outcrop and hand
specimen

Reference: Todd, V.R. Preliminary Geologic Map of the El Cajon 30' x 60' Quadrangle, Southern California. U.S. Geological Survey Open-File Report 2004-1361. [144]

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

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Weber, F.H., Jr. (1963a) Mines and mineral resources of San Diego County, California. California Division of Mines and Geology County Report 3, 309 pp.: No. 472: 281.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 486.


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