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Maple Lode Mine (Maple claim), Aguanga Mountain, Oak Grove, Aguanga Mountain Mining District (Smith Mountain Mining District), San Diego County, California, USAi
Regional Level Types
Maple Lode Mine (Maple claim)Mine
Aguanga MountainMountain
Oak Grove- not defined -
Aguanga Mountain Mining District (Smith Mountain Mining District)Mining District
San Diego CountyCounty
CaliforniaState
USACountry

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Key
Latitude & Longitude (WGS84):
33° 19' 26'' North , 116° 45' 57'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Aguanga1,128 (2011)16.1km
Anza3,014 (2011)27.1km
Valley Center9,277 (2011)27.6km
San Pasqual2,041 (2018)31.2km
Julian1,502 (2011)31.2km


Setting:
A gemstone mine located in the S½NW¼ Sec. 13, T9S, R3E, SBM, situated southwest of the crest of Aguanga Mountain. The property consists of a single unpatented lode mining claim aggregating 20 acres, more or less.

History:
The Maple Lode is a gem-bearing pegmatite deposit first discovered by Bert Simmons around 1902, and later claimed by Bill Dyche. The deposit was worked by Dyche and his men for gem-quality blue tourmaline and blue topaz. The main working face consisted of a shallow adit which extended nearly 27 feet into the ledge following a series of pockets.

The deposit was claimed again in 1915 by Fred Rynerson who briefly worked the ledge with Henry Stenbock. Rynerson discovered one exceptionally fine blue topaz crystal which measured 1 inch tall by one half inch wide, associated with blue tourmaline, about 10 feet back along the east wall of the underground workings.

The mine was later claimed as the Maple Lode, and worked for several years by Mr. MacMillan of Sunshine Summit. MacMillan was said to have developed a second adit about 8 feet above the original underground workings, producing a small quantity of gem material. This new adit was described as an irregular, partially gophered working which extended back nearly 20 feet from the surface, and was connected to the lower main adit by a short raise. The main adit was also extended an additional 23 feet underground, although these workings were said to have partially caved afterward. MacMillan sold his claim to Del Flatz of San Diego in 1959.

In the late 1970's and early 1980's, Roland Reed and several partners worked the deposit using heavy equipment to strip overburden and develop a large bench cut along the pegmatite exposure, removing most of the old underground workings during the process. A claim to the deposit was located by Roland Reed and John E. Gregory of Alpine on November 2, 1985. Work by Reed and others produced several topaz crystals ranging in color from medium blue to pale green, and a few small matrix specimens of topaz on lepidolite and albite were also recovered. Additionally, numerous blue and blue-pink bicolor elbaite crystals were discovered, usually occurring as slender gem pencils up to 5cm long, some of them being a bright sky-blue color. A few pinkish-red colored apatite crystals were also found, up to 7.5cm in size and displaying a tabular habit. Reed later transferred his interest in the claim to Gregory on July 28, 2000.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


11 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Reference: Weber, F. H. 1963. Geology and mineral resources of San Diego County, California. California Division of Mines and Geology, County Report 3: p 107, illus., maps.
'Albite-Anorthite Series'
Reference: Weber, F. H. 1963. Geology and mineral resources of San Diego County, California. California Division of Mines and Geology, County Report 3: p 107, illus., maps.
Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Fisher, J., 2002, Gem and Rare Element Pegmatites of Southern California, Mineralogical Record 33(5), 363-407.
Fluorapatite
Formula: Ca5(PO4)3F
Reference: Fisher, J., 2002, Gem and Rare Element Pegmatites of Southern California, Mineralogical Record 33(5), 363-407.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: Weber, F. H. 1963. Geology and mineral resources of San Diego County, California. California Division of Mines and Geology, County Report 3: p 107, illus., maps.
'Indicolite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Rynerson, F. J. 1967. Exploring and Mining Gems & Gold in the West; Ch. 17-18, p. 122-126: Naturegraph Publishers, Inc., Happy Camp, California.; Jesse Fisher (2011) Mines and Minerals of the Southern California Pegmatite Province. Rocks & Minerals 86:14-34.
'Lepidolite'
Reference: Fisher, J. 2002. Gem and rare-element pegmatites of southern California. Mineralogical Record 33(5): 371-373.
Microcline
Formula: K(AlSi3O8)
Reference: Fisher, J., 2002, Gem and Rare Element Pegmatites of Southern California, Mineralogical Record 33(5), 363-407.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Description: A significant constituent of dikes.
Reference: Weber, F. H. 1963. Geology and mineral resources of San Diego County, California. California Division of Mines and Geology, County Report 3: 89, 107; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 427.
Opal
Formula: SiO2 · nH2O
Description: Hyalite was observed to be coating quartz and feldspar crystals on the walls of a small vug discovered in the early 1990's by D. Bernstein of Century City.
Reference: Cordova, E. M. 2009. Personal communication with S. L. Ritchie, SDMC, Feb.
Opal var: Opal-AN
Formula: SiO2 · nH2O
Description: Hyalite was observed to be coating quartz and feldspar crystals on the walls of a small vug discovered in the early 1990's by D. Bernstein of Century City.
Reference: Cordova, E. M. 2009. Personal communication with S. L. Ritchie, SDMC, Feb.
Orthoclase
Formula: K(AlSi3O8)
Reference: Weber, F. H. 1963. Geology and mineral resources of San Diego County, California. California Division of Mines and Geology, County Report 3: p 107, illus., maps.
Quartz
Formula: SiO2
Reference: Weber, F. H. 1963. Geology and mineral resources of San Diego County, California. California Division of Mines and Geology, County Report 3: p 107, illus., maps.
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Weber, F. H. 1963. Geology and mineral resources of San Diego County, California. California Division of Mines and Geology, County Report 3: p 107, illus., maps.
Spessartine
Formula: Mn2+3Al2(SiO4)3
Reference: Slak, G. 2008. Personal collection and description. Mindat.org.
Topaz
Formula: Al2(SiO4)(F,OH)2
Reference: Rynerson, F.J. (1967), Exploring and Mining Gems & Gold in the West; Ch. 17-18, p. 122-126: Naturegraph Publishers, Inc., Happy Camp, California; Weber, F. H. (1963a), Geology and mineral resources of San Diego County, California. California Division of Mines and Geology, County Report 3: 107; Sinkankas, J. (1959) Gemstones of North America. D. Van Nostrand Co., New York, 675 pp.: 103; Sinkankas, J. (1976) Gemstones of North America II. Van Nostrand Reinhold Co., New York: 45; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 454.; Jesse Fisher (2011) Mines and Minerals of the Southern California Pegmatite Province. Rocks & Minerals 86:14-34.
'Tourmaline'
Formula: A(D3)G6(Si6O18)(BO3)3X3Z
Reference: Rynerson, F. J. 1967. Exploring and Mining Gems & Gold in the West; Ch. 17-18, p. 122-126: Naturegraph Publishers, Inc., Happy Camp, California.
'Tourmaline var: Rubellite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Fisher, J. 2002. Gem and rare-element pegmatites of southern California. Mineralogical Record 33(5): 371-373.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Opal4.DA.10SiO2 · nH2O
var: Opal-AN4.DA.10SiO2 · nH2O
Quartz4.DA.05SiO2
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
Elbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Microcline9.FA.30K(AlSi3O8)
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
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Garnet Group'-X3Z2(SiO4)3
'Indicolite'-A(D3)G6(T6O18)(BO3)3X3Z
'Lepidolite'-
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z
'var: Rubellite'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

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 61 - CYCLOSILICATES Six-Membered Rings
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
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
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)
Unclassified Minerals, Mixtures, etc.
'Albite-Anorthite Series'-
'Garnet Group'-X3Z2(SiO4)3
'Indicolite'-A(D3)G6(T6O18)(BO3)3X3Z
'Lepidolite'-
Opal
var: Opal-AN
-SiO2 · nH2O
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z
'var: Rubellite'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
H TopazAl2(SiO4)(F,OH)2
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H Opal (var: Opal-AN)SiO2 · nH2O
H OpalSiO2 · nH2O
LiLithium
Li ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
BBoron
B ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
B IndicoliteA(D3)G6(T6O18)(BO3)3X3Z
B TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
B Tourmaline (var: Rubellite)A(D3)G6(T6O18)(BO3)3X3Z
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
OOxygen
O ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
O TopazAl2(SiO4)(F,OH)2
O QuartzSiO2
O MicroclineK(AlSi3O8)
O AlbiteNa(AlSi3O8)
O FluorapatiteCa5(PO4)3F
O IndicoliteA(D3)G6(T6O18)(BO3)3X3Z
O TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
O Tourmaline (var: Rubellite)A(D3)G6(T6O18)(BO3)3X3Z
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O Garnet GroupX3Z2(SiO4)3
O MuscoviteKAl2(AlSi3O10)(OH)2
O OrthoclaseK(AlSi3O8)
O SpessartineMn32+Al2(SiO4)3
O Opal (var: Opal-AN)SiO2 · nH2O
O OpalSiO2 · nH2O
FFluorine
F TopazAl2(SiO4)(F,OH)2
F FluorapatiteCa5(PO4)3F
NaSodium
Na ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Na AlbiteNa(AlSi3O8)
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
AlAluminium
Al ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Al TopazAl2(SiO4)(F,OH)2
Al MicroclineK(AlSi3O8)
Al AlbiteNa(AlSi3O8)
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al OrthoclaseK(AlSi3O8)
Al SpessartineMn32+Al2(SiO4)3
SiSilicon
Si ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Si TopazAl2(SiO4)(F,OH)2
Si QuartzSiO2
Si MicroclineK(AlSi3O8)
Si AlbiteNa(AlSi3O8)
Si TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si Garnet GroupX3Z2(SiO4)3
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si OrthoclaseK(AlSi3O8)
Si SpessartineMn32+Al2(SiO4)3
Si Opal (var: Opal-AN)SiO2 · nH2O
Si OpalSiO2 · nH2O
PPhosphorus
P FluorapatiteCa5(PO4)3F
KPotassium
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
K OrthoclaseK(AlSi3O8)
CaCalcium
Ca FluorapatiteCa5(PO4)3F
MnManganese
Mn SpessartineMn32+Al2(SiO4)3
FeIron
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Sinkankas, J. (1959), Gemstones of North America. D. Van Nostrand Co., New York, 675 pp.: 103.
Weber, F. H. (1963a), Geology and mineral resources of San Diego County, California. California Division of Mines and Geology, County Report 3: 89, 107, illus., maps.
Rynerson, F. J. (1967), Exploring and Mining Gems & Gold in the West; Ch. 17-18, p. 122-126: Naturegraph Publishers, Inc., Happy Camp, California.
Sinkankas, J. (1976), Gemstones of North America II. Van Nostrand Reinhold Co., New York: 45.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 427, 454.
Fisher, J. (2002), Gem and rare-element pegmatites of southern California. Mineralogical Record 33(5): 371-373.
Bureau of Land Management (2008), Maple Lode Claim, San Diego County, California: Serial Number Index of Claims, United States Department of Interior; Dec.
Slak, G. (2009), Personal communication with S. L. Ritchie, SDMC, Jan.
Cordova, E. M. (2009), Personal communication with S. L. Ritchie, SDMC, Feb.
Fisher, Jesse (2011), Mines and Minerals of the Southern California Pegmatite Province. Rocks & Minerals: 86: 14-34.

Other Regions, Features and Areas containg this locality

Pacific PlateTectonic Plate

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