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El Molino Mine (El Molino pegmatite; MS 5391), Hiriart Mountain (Hariat Mtn; Harriot Mtn; Heriart Mtn; Heriot Mtn; Hiriat Hill), Pala, Pala Mining District, San Diego County, California, USAi
Regional Level Types
El Molino Mine (El Molino pegmatite; MS 5391)Mine
Hiriart Mountain (Hariat Mtn; Harriot Mtn; Heriart Mtn; Heriot Mtn; Hiriat Hill)Mountain
PalaTown
Pala Mining DistrictMining District
San Diego CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
33° 22' 16'' North , 117° 2' 1'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Rainbow1,832 (2011)11.5km
Valley Center9,277 (2011)17.0km
Temecula112,011 (2017)17.3km
Aguanga1,128 (2011)17.6km
Hidden Meadows3,485 (2011)17.8km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Fallbrook Gem and Mineral Society, Inc.Fallbrook, California20km
Vista Gem & Mineral SocietyVista, California27km
Palomar Gem & Mineral ClubEscondido, California28km
Mindat Locality ID:
28269
Long-form identifier:
mindat:1:2:28269:8
GUID (UUID V4):
7d79978e-42d6-48a5-970f-d1ecbe9b5e6a


"El Molino"
β€”Spanish, meaning "The Mill".

Setting:
Located in the NE4NE4 Sec. 25 T9S R2W SBM, the El Molino mine is low on the southeastern slope of Hiriart Mountain, and is in a group of three juxtaposed pegmatite dikes which trend north and dip 15 to 25 degrees west. The deposit was developed by several open cuts. Nearly all production was from the lowest dike which is 7 feet in average thickness. The gem-bearing variety of pegmatite was noted to occur in the central part of the dike, and generally at the contact between line rock and overlying graphic granite. This central unit, or core zone is described as continuous and ranges in thickness from 3 inches to 2 feet. The core consists of quartz, microcline, albite, and muscovite, with beryl, bismuth and sulfide minerals. Some of the beryls were noted to occur as individual crystals and radiating crystal groups, with some as colorless to deep-pink tabular crystals which line cavities or pockets.

History:
A claim to the deposit was located by Marion M. Sickler on January 1st of 1904 (MS 5391A). Prior to the date of the El Molino location, the surrounding vacant public lands were temporarily withdrawn and removed from mineral entry under the United States land and mineral laws pursuant to Secretarial Order dated January 24, 1903. This order was a temporary withdrawal pending acquisition of all private inholdings, including valid existing rights, for the benefit of the Pala Tribe, under Indian tract allotment pursuant to the Act of January 12, 1891.

On August 27th, 1938, Marion M. Sickler deeded the mine to his son Fred for 1 dollar and 'love and affection'. Fred eventually sold the mine to George Ashley in 1947, whom subsequently sold the mine to Norman E. Dawson in 1948.

In the early 1990's the Secretary of the Interior, through the delegation to the Bureau of Land Management (BLM), investigated the bona fides of the mining claim to determine any encumbrance of an allotment application (trust patent) filed by the Bureau of Indian Affairs on behalf of the Pala Tribe on June 19, 1980. The claim was adjudicated and in 1992 it was declared invalid from the beginning, or void ab initio. The land is now managed for the benefit of the Pala Band of Mission Indians by the Bureau of Indian Affairs (BIA).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

9 valid minerals.

Detailed Mineral List:

β“˜ Albite
Formula: Na(AlSi3O8)
β“˜ Beryl
Formula: Be3Al2(Si6O18)
β“˜ Bismuthinite
Formula: Bi2S3
β“˜ Bismutite
Formula: (BiO)2CO3
β“˜ Chalcocite
Formula: Cu2S
Colour: Black
Description: Occurs as pea-sized, sooty masses in quartz-rich inner zone of the pegmatite.
β“˜ Microcline
Formula: K(AlSi3O8)
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Orthoclase
Formula: K(AlSi3O8)
β“˜ Quartz
Formula: SiO2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Chalcocite2.BA.05Cu2S
β“˜Bismuthinite2.DB.05Bi2S3
Group 4 - Oxides and Hydroxides
β“˜Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
β“˜Bismutite5.BE.25(BiO)2CO3
Group 9 - Silicates
β“˜Beryl9.CJ.05Be3Al2(Si6O18)
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜Microcline9.FA.30K(AlSi3O8)
β“˜Orthoclase9.FA.30K(AlSi3O8)
β“˜Albite9.FA.35Na(AlSi3O8)

List of minerals for each chemical element

HHydrogen
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
BeBeryllium
Beβ“˜ BerylBe3Al2(Si6O18)
CCarbon
Cβ“˜ Bismutite(BiO)2CO3
OOxygen
Oβ“˜ AlbiteNa(AlSi3O8)
Oβ“˜ Bismutite(BiO)2CO3
Oβ“˜ BerylBe3Al2(Si6O18)
Oβ“˜ MicroclineK(AlSi3O8)
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ OrthoclaseK(AlSi3O8)
Oβ“˜ QuartzSiO2
NaSodium
Naβ“˜ AlbiteNa(AlSi3O8)
AlAluminium
Alβ“˜ AlbiteNa(AlSi3O8)
Alβ“˜ BerylBe3Al2(Si6O18)
Alβ“˜ MicroclineK(AlSi3O8)
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ OrthoclaseK(AlSi3O8)
SiSilicon
Siβ“˜ AlbiteNa(AlSi3O8)
Siβ“˜ BerylBe3Al2(Si6O18)
Siβ“˜ MicroclineK(AlSi3O8)
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ OrthoclaseK(AlSi3O8)
Siβ“˜ QuartzSiO2
SSulfur
Sβ“˜ BismuthiniteBi2S3
Sβ“˜ ChalcociteCu2S
KPotassium
Kβ“˜ MicroclineK(AlSi3O8)
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Kβ“˜ OrthoclaseK(AlSi3O8)
CuCopper
Cuβ“˜ ChalcociteCu2S
BiBismuth
Biβ“˜ BismuthiniteBi2S3
Biβ“˜ Bismutite(BiO)2CO3

Localities in this Region

  • California
    • San Diego County
      • Pala Mining District
        • Pala
          • Hiriart Mountain (Hariat Mtn; Harriot Mtn; Heriart Mtn; Heriot Mtn; Hiriat Hill)

Other Regions, Features and Areas containing this locality

North America Plate
Pacific PlateTectonic Plate

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.

References

 
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