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Hercules Mine (Beryl claim; Hercules claim; Hercules group; Hercules prospect), Ramona, Ramona District, San Diego Co., California, USAi
Regional Level Types
Hercules Mine (Beryl claim; Hercules claim; Hercules group; Hercules prospect)Mine
Ramona- not defined -
Ramona DistrictMining District
San Diego Co.County
CaliforniaState
USACountry

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Key
Lock Map
Latitude & Longitude (WGS84):
33° 3' 31'' North , 116° 47' 32'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
San Diego Country Estates10,109 (2011)5.8km
Ramona20,292 (2011)7.3km
San Pasqual2,041 (2018)15.5km
Julian1,502 (2011)17.9km
Hidden Trails750 (2008)23.3km


Hercules walked off with a powerful stride and soon reached the end of all land in the west.
—d'Aulaire, Mortal Descendants of Zeus

Setting:
The Hercules mine is located 7.2 km (4.5 miles) ENE of Ramona, encompassing the southern slope of a hill with an elevation of 2480 feet from which the coast of the Pacific Ocean is visible. The south side of the hill slopes steeply towards the southwest, following the general dip of the pegmatite intrusions which outcrop along the top and just north of the hill's ridge. The location is mainly in the S2SE4NE4 Sec. 8 T13S R2E SBM. The site borders the Little Three property on the north.

The Hercules pegmatite is north of the Little Three dike, and is primarily known for its production of bright orange spessertine. The pegmatite has been primarily developed where it dips down onto the Little Three mine property.

Geology:
The area of the Hercules mine lies in the mid-southern portion of the Peninsular Range province. The most abundant rocks found in this area are the many granitic plutons which constitute the southern California batholith. Other rocks found in the area are meta-sedimentary and meta volcanic rocks the antedate the batholith and form a wide spread but generally minor part of the terrain. The length of time between the injections of the gabbro and that of the final granite in the batholith is believed to have been approximately 10 million years. The batholith is made up of many separate injections. The succession of intrusions is from gabbro to tonalite, to granodiorite, and finally granite.

Discrete pegmatite bodies occur throughout the batholith and in some cases with the older meta-sedimentary and meta-volcanic rocks. The geology of the Hercules mine is comprised of partial alluvium overlying a bed rock consisting of large solid quartz monzonite and gabbroic xenoliths in decomposed quartz monzonite, containing complex pegmatite intrusions.

The granitic pegmatite intrusions found at the Hercules mine produce a variety of solid solution series minerals, occurring in both gem and specimen quality, usually in kaolinite filled miarolitic cavities (pockets). Minerals found include: Beryl; Clinozoisite; Garnet; Lepidolite; Muscovite; Microcline, Cleavelandite; Quartz; Stibiotantalite; and Elbaite. These pegmatites appear as a localized swarm in which the individual dikes run parallel to each other. The Hercules dike strikes northwestward and dips about 45 degrees south, and averages 2-3 feet in thickness. The ledge is traceable for over 1000 feet along strike.

History:
The Hercules was originally located in August of 1903 by A. W. Pray, S. G. Ingle, and Harry Titus of Ramona, as 2 end-to-end north-northwest trending lode mining claims. Most of the early development work was done by Pray.

Between 1904 and 1938, development consisted of a 200 foot tunnel, and a 50 foot tunnel on the vein. These working were said to have produced about 15 pounds of gem quality spessartite and 1/2 pound of green beryl. When cut, the spessartine gems ranged from about 1 to 6 carats. By 1939, the claim was owned by W. H. Davis of Pasadena, who reported the mine to be idle.

In 1954, Robert B. Winstead and George Converse of Ramona relocated a single north-trending claim. Workings were described at that time as several shallow open cuts and a 50 foot adit driven northwestward from the south border of the claim. (include John Sinkankas work)

From mid-1957 to the early 1990's, the Spaulding family recovered many kilos of spessartine from the Hercules dike. (add Sinkankas; Gray developments)

In December 1995, the San Diego Mining Company began probing inside an old brush covered and partially caved adit which revealed the continuation of a large gem pocket that had been discovered and worked by hand many decades earlier. The single gem pocket produced nearly two kilograms of mixed grade spessartine garnet, approximately 40 grams being of facetable quality material, along with large amounts of associated minerals such as smoky and citrine quartz, black tourmaline, cleavelandite, microcline, and muscovite.

Regions containing this locality

Pacific OceanOcean
Pacific PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


23 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Colour: Faintly bluish white
Description: Occurs associated with microcline both as a matrix and as perthitic inclusions; also occurs in pocket linings of cauliflower forms.
Reference: Sinkankas, J. (1967) Notes on some minerals from San Diego County, California. Gems and Minerals 363: 34-35; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 364; Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.; Jesse Fisher (2011) Mines and Minerals of the Southern California Pegmatite Province. Rocks & Minerals 86:14-34.
'Almandine-Spessartine Series'
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
'Axinite Group'
Reference: Fisher, J. (2002), Mineralogical Record, 33(5), 363-407.
Axinite-(Mn)
Formula: Ca2Mn2+Al2BSi4O15(OH)
Description: Occurs only in pocket pegmatite (open cavities or 'frozen' cavities).
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
Beryl
Formula: Be3Al2(Si6O18)
Description: Occurs chiefly or wholly in pocket pegmatite.
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
Beryl var: Aquamarine
Formula: Be3Al2Si6O18
Description: Occurs chiefly or wholly in pocket pegmatite.
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.; Jesse Fisher (2011) Mines and Minerals of the Southern California Pegmatite Province. Rocks & Minerals 86:14-34.
Beryl var: Goshenite
Formula: Be3Al2(Si6O18)
Description: Occurs chiefly or wholly in pocket pegmatite.
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
Beryl var: Morganite
Formula: Be3Al2(Si6O18)
Description: Occurs chiefly or wholly in pocket pegmatite.
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.; Jesse Fisher (2011) Mines and Minerals of the Southern California Pegmatite Province. Rocks & Minerals 86:14-34.
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Description: Occurs as inclusions of altered wall-rock.
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
Bismuthinite
Formula: Bi2S3
Colour: Gray
Description: Occurs as massive material in the upper workings in a quartz core.
Reference: Sinkankas, J. (1967), Notes on some minerals from San Diego County, California. Gems and Minerals 363: 34-35; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 126.
Clinozoisite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Description: Occurs only in pocket pegmatite (open cavities or 'frozen' cavities).
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
Columbite-(Fe)
Formula: Fe2+Nb2O6
Description: Occurs only in pocket pegmatite (open cavities or 'frozen' cavities).
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
Columbite-(Mn)
Formula: Mn2+Nb2O6
Description: Occurs only in pocket pegmatite (open cavities or 'frozen' cavities).
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
'Columbite-Tantalite'
Description: Occurs only in pocket pegmatite (open cavities or 'frozen' cavities).
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
Cookeite
Formula: (Al2Li)Al2(AlSi3O10)(OH)8
Description: Occurs only in pocket pegmatite (open cavities or 'frozen' cavities).
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106; San Diego Mining Company (1996).
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Habit: Acicular
Colour: Dark green
Description: Occurs as crystals to 15 cm but broken into transverse segments and not thicker than 2 mm in pockets in the pegmatite. The crystals penetrate microcline perthitic euhedrons.
Reference: Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 484.
Fluorapatite
Formula: Ca5(PO4)3F
Description: Occurs chiefly or wholly in pocket pegmatite.
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
Goethite
Formula: α-Fe3+O(OH)
Description: Sinkankas (1967) reported the presence of bismuthinite associated with bismutite from the Hercules workings. Examinations of this material by E. E. Foord showed an unidentified Pb-Bi-Ag sulfosalt and cerussite to be present.
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
Laumontite
Formula: CaAl2Si4O12 · 4H2O
Colour: Colorless (becomes white upon exposure).
Description: Occurs as small (2 mm) terminated crystals in a leached feldspar core unit of the pegmatite. Occurs chiefly or wholly in pocket pegmatite.
Reference: Sinkankas, J. (1967) Notes on some minerals from San Diego County, California. Gems and Minerals 363: 34-35; Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 384.
'Lepidolite'
Reference: San Diego Mining Company (1996)
Microcline
Formula: K(AlSi3O8)
Description: Microcline (including maximum and intermediate), occurs as sharp euhedrons. Perthitic, on albite within pockets.
Reference: Sinkankas, J. (1967) Notes on some minerals from San Diego County, California. Gems and Minerals 363: 34-35; Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 364; Fisher, J., 2002, Mineralogical Record, 33(5), 363-407.
Montmorillonite
Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Description: Occurs only from pocket pegmatite (open cavities or 'frozen' cavities).
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
Orthoclase
Formula: K(AlSi3O8)
Description: Occurs only from pocket pegmatite (open cavities or 'frozen' cavities). Rare as thin zones on the exterior of microcline crystals.
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
Quartz
Formula: SiO2
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
Quartz var: Citrine
Formula: SiO2
Reference: San Diego Mining Company (1996)
Quartz var: Milky Quartz
Formula: SiO2
Reference: San Diego Mining Company (1996)
Quartz var: Rock Crystal
Formula: SiO2
Reference: San Diego Mining Company (1996)
Quartz var: Smoky Quartz
Formula: SiO2
Description: Occurred in a pegmatite pocket. Crystals up to 25 x 12.5 cm.
Reference: Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 348.
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.; Jesse Fisher (2011) Mines and Minerals of the Southern California Pegmatite Province. Rocks & Minerals 86:14-34.
Spessartine
Formula: Mn2+3Al2(SiO4)3
Description: Occurs chiefly or wholly in pocket pegmatite.
Reference: Tisdall, F. S. H. (1961), Spessartine garnet from California. Gemologist: 30: 61-62; Weber, F. H. (1963a), Geology and mineral resources of San Diego County, California. California Division of Mines and Geology, County Report 3: p. 104; illus., maps.: 95-96; Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.; Jesse Fisher (2011) Mines and Minerals of the Southern California Pegmatite Province. Rocks & Minerals 86:14-34.
'Stilbite subgroup'
Description: Occurs only from pocket pegmatite (open cavities or 'frozen' cavities).
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
Topaz
Formula: Al2(SiO4)(F,OH)2
Description: Occurs only from pocket pegmatite (open cavities or 'frozen' cavities).
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.
'Tourmaline'
Formula: A(D3)G6(Si6O18)(BO3)3X3Z
Reference: San Diego Mining Company (1996)
'Tourmaline var: Verdelite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: San Diego Mining Company (1996)
Vermiculite
Formula: Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Description: Alteration of biotite.
Reference: Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 106.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Bismuthinite2.DB.05Bi2S3
Group 4 - Oxides and Hydroxides
Columbite-(Fe)4.DB.35Fe2+Nb2O6
Columbite-(Mn)4.DB.35Mn2+Nb2O6
Goethite4.00.α-Fe3+O(OH)
Quartz4.DA.05SiO2
var: Citrine4.DA.05SiO2
var: Milky Quartz4.DA.05SiO2
var: Rock Crystal4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
Axinite-(Mn)9.BD.20Ca2Mn2+Al2BSi4O15(OH)
Beryl9.CJ.05Be3Al2(Si6O18)
var: Aquamarine9.CJ.05Be3Al2Si6O18
var: Goshenite9.CJ.05Be3Al2(Si6O18)
var: Morganite9.CJ.05Be3Al2(Si6O18)
Clinozoisite9.BG.05a{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Cookeite9.EC.55(Al2Li)Al2(AlSi3O10)(OH)8
Elbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Laumontite9.GB.10CaAl2Si4O12 · 4H2O
Microcline9.FA.30K(AlSi3O8)
Montmorillonite9.EC.40(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Orthoclase9.FA.30K(AlSi3O8)
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Spessartine9.AD.25Mn2+3Al2(SiO4)3
Topaz9.AF.35Al2(SiO4)(F,OH)2
Vermiculite9.EC.50Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Unclassified Minerals, Rocks, etc.
'Almandine-Spessartine Series'-
'Axinite Group'-
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Columbite-Tantalite'-
'Lepidolite'-
'Stilbite subgroup'-
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z
'var: Verdelite'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:3
Bismuthinite2.11.2.3Bi2S3
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
AB2O6
Columbite-(Fe)8.3.2.2Fe2+Nb2O6
Columbite-(Mn)8.3.2.4Mn2+Nb2O6
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] and >[6] coordination
Spessartine51.4.3a.3Mn2+3Al2(SiO4)3
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Topaz52.3.1.1Al2(SiO4)(F,OH)2
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination
Axinite-(Mn)56.2.2.3Ca2Mn2+Al2BSi4O15(OH)
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)
Clinozoisite58.2.1a.4{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(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)
Six-Membered Rings with borate groups
Elbaite61.3.1.8Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Vermiculite71.2.2d.3Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Sheets of 6-membered rings with 2:1 clays
Montmorillonite71.3.1a.2(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Cookeite71.4.1.2(Al2Li)Al2(AlSi3O10)(OH)8
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)
Orthoclase76.1.1.1K(AlSi3O8)
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Laumontite77.1.1.4CaAl2Si4O12 · 4H2O
Unclassified Minerals, Mixtures, etc.
'Almandine-Spessartine Series'-
'Axinite Group'-
Beryl
var: Aquamarine
-Be3Al2Si6O18
var: Goshenite-Be3Al2(Si6O18)
var: Morganite-Be3Al2(Si6O18)
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Columbite-Tantalite'-
Kaolinite-Al2(Si2O5)(OH)4
'Lepidolite'-
Quartz
var: Citrine
-SiO2
var: Milky Quartz-SiO2
var: Rock Crystal-SiO2
var: Smoky Quartz-SiO2
'Stilbite subgroup'-
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z
'var: Verdelite'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H LaumontiteCaAl2Si4O12 · 4H2O
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Axinite-(Mn)Ca2Mn2+Al2BSi4O15(OH)
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
H Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
H KaoliniteAl2(Si2O5)(OH)4
H Cookeite(Al2Li)Al2(AlSi3O10)(OH)8
H Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
H Goethiteα-Fe3+O(OH)
H ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
H TopazAl2(SiO4)(F,OH)2
H VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
LiLithium
Li Cookeite(Al2Li)Al2(AlSi3O10)(OH)8
Li ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
BeBeryllium
Be Beryl (var: Goshenite)Be3Al2(Si6O18)
Be BerylBe3Al2(Si6O18)
Be Beryl (var: Aquamarine)Be3Al2Si6O18
Be Beryl (var: Morganite)Be3Al2(Si6O18)
BBoron
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
B Axinite-(Mn)Ca2Mn2+Al2BSi4O15(OH)
B ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
B Tourmaline (var: Verdelite)A(D3)G6(T6O18)(BO3)3X3Z
B TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
OOxygen
O SpessartineMn32+Al2(SiO4)3
O QuartzSiO2
O Beryl (var: Goshenite)Be3Al2(Si6O18)
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O BerylBe3Al2(Si6O18)
O AlbiteNa(AlSi3O8)
O MicroclineK(AlSi3O8)
O MuscoviteKAl2(AlSi3O10)(OH)2
O Quartz (var: Smoky Quartz)SiO2
O LaumontiteCaAl2Si4O12 · 4H2O
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Axinite-(Mn)Ca2Mn2+Al2BSi4O15(OH)
O Beryl (var: Aquamarine)Be3Al2Si6O18
O Beryl (var: Morganite)Be3Al2(Si6O18)
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
O KaoliniteAl2(Si2O5)(OH)4
O Columbite-(Fe)Fe2+Nb2O6
O Columbite-(Mn)Mn2+Nb2O6
O Cookeite(Al2Li)Al2(AlSi3O10)(OH)8
O Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
O FluorapatiteCa5(PO4)3F
O Goethiteα-Fe3+O(OH)
O ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
O Tourmaline (var: Verdelite)A(D3)G6(T6O18)(BO3)3X3Z
O OrthoclaseK(AlSi3O8)
O TopazAl2(SiO4)(F,OH)2
O VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
O Quartz (var: Citrine)SiO2
O Quartz (var: Rock Crystal)SiO2
O Quartz (var: Milky Quartz)SiO2
O TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
F FluorapatiteCa5(PO4)3F
F TopazAl2(SiO4)(F,OH)2
NaSodium
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Na AlbiteNa(AlSi3O8)
Na Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Na ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Mg Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Mg VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
AlAluminium
Al SpessartineMn32+Al2(SiO4)3
Al Beryl (var: Goshenite)Be3Al2(Si6O18)
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al BerylBe3Al2(Si6O18)
Al AlbiteNa(AlSi3O8)
Al MicroclineK(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al LaumontiteCaAl2Si4O12 · 4H2O
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al Axinite-(Mn)Ca2Mn2+Al2BSi4O15(OH)
Al Beryl (var: Aquamarine)Be3Al2Si6O18
Al Beryl (var: Morganite)Be3Al2(Si6O18)
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Al Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Al KaoliniteAl2(Si2O5)(OH)4
Al Cookeite(Al2Li)Al2(AlSi3O10)(OH)8
Al Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Al ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Al OrthoclaseK(AlSi3O8)
Al TopazAl2(SiO4)(F,OH)2
Al VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
SiSilicon
Si SpessartineMn32+Al2(SiO4)3
Si QuartzSiO2
Si Beryl (var: Goshenite)Be3Al2(Si6O18)
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si BerylBe3Al2(Si6O18)
Si AlbiteNa(AlSi3O8)
Si MicroclineK(AlSi3O8)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Quartz (var: Smoky Quartz)SiO2
Si LaumontiteCaAl2Si4O12 · 4H2O
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Axinite-(Mn)Ca2Mn2+Al2BSi4O15(OH)
Si Beryl (var: Aquamarine)Be3Al2Si6O18
Si Beryl (var: Morganite)Be3Al2(Si6O18)
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Si Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Si KaoliniteAl2(Si2O5)(OH)4
Si Cookeite(Al2Li)Al2(AlSi3O10)(OH)8
Si Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Si ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Si OrthoclaseK(AlSi3O8)
Si TopazAl2(SiO4)(F,OH)2
Si VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Si Quartz (var: Citrine)SiO2
Si Quartz (var: Rock Crystal)SiO2
Si Quartz (var: Milky Quartz)SiO2
Si TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
PPhosphorus
P FluorapatiteCa5(PO4)3F
SSulfur
S BismuthiniteBi2S3
KPotassium
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
K OrthoclaseK(AlSi3O8)
CaCalcium
Ca LaumontiteCaAl2Si4O12 · 4H2O
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca Axinite-(Mn)Ca2Mn2+Al2BSi4O15(OH)
Ca Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Ca Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Ca FluorapatiteCa5(PO4)3F
MnManganese
Mn SpessartineMn32+Al2(SiO4)3
Mn Axinite-(Mn)Ca2Mn2+Al2BSi4O15(OH)
Mn Columbite-(Mn)Mn2+Nb2O6
FeIron
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Fe Columbite-(Fe)Fe2+Nb2O6
Fe Goethiteα-Fe3+O(OH)
Fe VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
NbNiobium
Nb Columbite-(Fe)Fe2+Nb2O6
Nb Columbite-(Mn)Mn2+Nb2O6
BiBismuth
Bi BismuthiniteBi2S3

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

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]

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]

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)
Kunz, George Frederick (1905a), Gems, jewelers’ materials, and ornamental stones of California: California Division Mines Bulletin 37, 171 pp.: 49, 52-53, 140-149.
Tucker, W. B., Reed, C. H. (1939), Los Angeles Field District - Mineral Resources of San Diego County. California Journal of Mines and Geology, quarterly chapter of State Mineralogist's Report 35; January: p. 37-40, Illus., maps.
Sinkankas, J. (1957a), Recent gem mining at Ramona, San Diego County, California. Gems and Gemology: 8: 369.
Tisdall, F. S. H. (1961), Spessartine garnet from California. Gemologist: 30: 61-62.
Weber, F. H. (1963a), Geology and mineral resources of San Diego County, California. California Division of Mines and Geology, County Report 3: p. 104; illus., maps.: 95-96.
Simpson, D. R. (1965), Geology of the central part of the Ramona pegmatite district, San Diego County, California. California Division of Mines and Geology, Special Report 86: p. 3-23.
Murdoch, Joseph & Webb, Robert W. (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 195.
Rynerson, F. J. (1967), Exploring and mining for Gems and Gold in the West. Happy Camp, California: Naturegraph Publishers, Inc., 204 pages.
Sinkankas, J. (1967), Notes on some minerals from San Diego County, California. Gems and Minerals 363: 34-35.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 126, 348, 364, 384, 455 (map 13-4), 484, 498-499.
Stern, L. A., Brown, G. E., Jr., Bird, D. K., Jahns, R. H., Foord, E. E., Shigley, J. E., and Spaulding, L. B., Jr. (1986), Mineralogy and geochemical evolution of the Little Three pegmatite-aplite layered intrusive; Ramona, CA. American Mineralogist, 62: 966-978.
Rocks & Minerals (1988), 63: 138.
Foord, Eugene E., Spaulding, Louis B. Jr., Martin, Robert F. & Mason, Roger A. (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): 101-127.
Sinkankas, J. (1997), Gemstones of North America. Tucson, Arizona: Geoscience Press Inc., 526 pages.
Fisher, J. (2002), Gem and rare-element pegmatites of southern California. Mineralogical Record 33(5): 371-373, 389-390.
Fisher, Jesse (2011), Mines and Minerals of the Southern California Pegmatite Province. Rocks & Minerals: 86: 14-34.


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