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A.B.C. Mine (ABC Mine; Daggett & MacIntosh; Daggett group), Ramona, Ramona Mining District, San Diego County, California, USAi
Regional Level Types
A.B.C. Mine (ABC Mine; Daggett & MacIntosh; Daggett group)Mine
Ramona- not defined -
Ramona Mining DistrictMining District
San Diego CountyCounty
CaliforniaState
USACountry

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Key
Latitude & Longitude (WGS84):
33° 3' 45'' North , 116° 48' 18'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Ramona20,292 (2011)6.3km
San Diego Country Estates10,109 (2011)6.5km
San Pasqual2,041 (2018)14.2km
Julian1,502 (2011)19.0km
Hidden Trails750 (2008)22.0km


Setting:
The ABC mine is located in the NW4NW4 Section 8, T13S, R2E, SBM; Ramona District, 6.2 km (3.9 miles) ENE of Ramona.

History:
The ABC deposit, which is noted for its yield of beautiful pink beryl during the early 1900's, was discovered in November 1903, and developed by Henry Daggett of San Diego, and Alexander MacIntosh of Ramona (Kunz, 1905, p. 140). The property was worked until the early 1910's and then became idle until 1922 when it was relocated by L. B. Spaulding of Ramona. Victor and A. L. Baldwin of San Diego purchased the property from Mr. Spaulding in 1937. In the late 1950's activity was restricted to amateur collectors who picked over the old dumps.

The mine was developed in a pegmatite dike which strikes northwestward, dips gently southwest, and ranges in thickness from three or four to perhaps five feet. The dike is exposed laterally for about 3,500 feet, but the principal workings are limited to the lower part of the eastern slope of a shallow south-trending stream canyon. The gem-bearing portion of the dike in these workings was described by Kunz (1905, p. 141) as follows:

"... a stratum varying in width from 1 to 6 inches, composed of a grayish or whitish decomposed orthoclase, with disseminated crystals of muscovite having a pinkish and lavender tinge on the outer edges. It is in this stratum, coated with albite and clay, that the pink beryls are found, generally solitary in a pocket with two or three large blackish-green tourmaline crystals..."

Several pounds of pink beryl were mined, including a crystal from which was cut a flawless 30-carat stone. Very small spessartite crystals also occur in the dike. Lepidolite also occurs, but is sparse. The workings consist of a series of shallow open cuts and trenches developed along the strike of the dike for about 200 feet. In addition, Kunz (1905, p. 140) stated that the pegmatite was developed by an 18-foot adit from which "a stope following the pay shoot for 45 feet had been run." These underground workings were no longer accessible as reported by the Baldwins in 1957.

In the early days of the mine, local gemstone miner and cutter Frederick James Rynerson recalled the following:

"Cutting stones from a dozen different mines and prospects, I got so I could tell from stones brought in to be cut, about where they came from. I saw some (spessartine garnets) that the Dagget boys took out of their property northeast of Ramona that were taken out as individual crystals, very light in color, almost a straw." (Exploring and Mining Gems and Gold in the West, Frederick J. Rynerson, 1967)

Mining was last done on the property in 1923, when Mr. Spaulding opened a pocket in the probable extension of the ABC dike on the northwest side of the creek, and obtained several "fine" spessartite crystals. The largest stone cut from these was 6 1/4 carats. (California Division of Mines and Geology, San Diego - Mineral Resources, 1963)

Notes: Will be adding 1906 description of activities and legal matters, production etc.; recent development status at the site describing mid to late 1990's production, etc. Also to do: Photographs: c1905; c1997, Green Cap elbaites, quartz crystals. Update and detail literary references.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


11 valid minerals. 1 erroneous literature entry.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
Beryl
Formula: Be3Al2(Si6O18)
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
Beryl var: Morganite
Formula: Be3Al2(Si6O18)
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
'Feldspar Group'
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
Iron
Formula: Fe
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
'Lepidolite'
Description: Described as lepidolite, lithia mica, and pink stained muscovite.
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
'Manganese Oxides'
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
Montmorillonite
Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
Orthoclase
Formula: K(AlSi3O8)
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
Quartz
Formula: SiO2
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
Spessartine
Formula: Mn2+3Al2(SiO4)3
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
Talc
Formula: Mg3Si4O10(OH)2
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
Talc var: Steatite
Formula: Mg3(Si4O10)(OH)2
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
Topaz ?
Formula: Al2(SiO4)(F,OH)2
Description: Uncertain due to small size of sample. Large topaz crystals of gem quality do occur in the adjacent Little Three mine pegmatite.
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
'Tourmaline'
Formula: A(D3)G6(Si6O18)(BO3)3X3Z
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
'Tourmaline var: Verdelite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Iron ?1.AE.05Fe
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
Beryl9.CJ.05Be3Al2(Si6O18)
var: Morganite9.CJ.05Be3Al2(Si6O18)
Kaolinite9.ED.05Al2(Si2O5)(OH)4
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
Talc9.EC.05Mg3Si4O10(OH)2
var: Steatite9.EC.05Mg3(Si4O10)(OH)2
Topaz ?9.AF.35Al2(SiO4)(F,OH)2
Unclassified Minerals, Rocks, etc.
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Feldspar Group'-
'Lepidolite'-
'Manganese Oxides'-
'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 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
Topaz ?52.3.1.1Al2(SiO4)(F,OH)2
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
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
Talc71.2.1.3Mg3Si4O10(OH)2
Sheets of 6-membered rings with 2:1 clays
Montmorillonite71.3.1a.2(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
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)
Orthoclase76.1.1.1K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
Beryl
var: Morganite
-Be3Al2(Si6O18)
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Feldspar Group'-
Iron ?-Fe
Kaolinite-Al2(Si2O5)(OH)4
'Lepidolite'-
'Manganese Oxides'-
Talc
var: Steatite
-Mg3(Si4O10)(OH)2
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z
'var: Verdelite'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
H MuscoviteKAl2(AlSi3O10)(OH)2
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H Talc (var: Steatite)Mg3(Si4O10)(OH)2
H Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
H TalcMg3Si4O10(OH)2
H KaoliniteAl2(Si2O5)(OH)4
H TopazAl2(SiO4)(F,OH)2
BeBeryllium
Be BerylBe3Al2(Si6O18)
Be Beryl (var: Morganite)Be3Al2(Si6O18)
BBoron
B TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
B Tourmaline (var: Verdelite)A(D3)G6(T6O18)(BO3)3X3Z
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
OOxygen
O QuartzSiO2
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O MuscoviteKAl2(AlSi3O10)(OH)2
O TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
O OrthoclaseK(AlSi3O8)
O AlbiteNa(AlSi3O8)
O BerylBe3Al2(Si6O18)
O Beryl (var: Morganite)Be3Al2(Si6O18)
O Tourmaline (var: Verdelite)A(D3)G6(T6O18)(BO3)3X3Z
O SpessartineMn32+Al2(SiO4)3
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O Talc (var: Steatite)Mg3(Si4O10)(OH)2
O Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
O TalcMg3Si4O10(OH)2
O KaoliniteAl2(Si2O5)(OH)4
O TopazAl2(SiO4)(F,OH)2
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
F TopazAl2(SiO4)(F,OH)2
NaSodium
Na AlbiteNa(AlSi3O8)
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Na Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
MgMagnesium
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Mg Talc (var: Steatite)Mg3(Si4O10)(OH)2
Mg Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Mg TalcMg3Si4O10(OH)2
AlAluminium
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al OrthoclaseK(AlSi3O8)
Al AlbiteNa(AlSi3O8)
Al BerylBe3Al2(Si6O18)
Al Beryl (var: Morganite)Be3Al2(Si6O18)
Al SpessartineMn32+Al2(SiO4)3
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Al KaoliniteAl2(Si2O5)(OH)4
Al TopazAl2(SiO4)(F,OH)2
SiSilicon
Si QuartzSiO2
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
Si OrthoclaseK(AlSi3O8)
Si AlbiteNa(AlSi3O8)
Si BerylBe3Al2(Si6O18)
Si Beryl (var: Morganite)Be3Al2(Si6O18)
Si SpessartineMn32+Al2(SiO4)3
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si Talc (var: Steatite)Mg3(Si4O10)(OH)2
Si Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Si TalcMg3Si4O10(OH)2
Si KaoliniteAl2(Si2O5)(OH)4
Si TopazAl2(SiO4)(F,OH)2
KPotassium
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
K MuscoviteKAl2(AlSi3O10)(OH)2
K OrthoclaseK(AlSi3O8)
CaCalcium
Ca Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
MnManganese
Mn SpessartineMn32+Al2(SiO4)3
FeIron
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe IronFe

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Kunz, G. F. (1905), Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142.
Murdoch, Joseph & Webb, Robert W. (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 103, 272.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 455 (map 13-4), 499.

Other Regions, Features and Areas containg this locality

Pacific PlateTectonic Plate

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