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White Dollar Mine (May Day Mine; Mayday Tungsten Mine), Ord Mountain, Ord Mountains, Ord Mining District, San Bernardino Co., California, USAi
Regional Level Types
White Dollar Mine (May Day Mine; Mayday Tungsten Mine)Mine
Ord MountainMountain
Ord MountainsMountain Range
Ord Mining DistrictMining District
San Bernardino Co.County
CaliforniaState
USACountry

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Key
Latitude & Longitude (WGS84):
34° 43' North , 116° 48' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Barstow23,692 (2017)28.7km
Barstow Heights24,202 (2006)28.9km
Lenwood3,543 (2011)32.9km
Lucerne Valley5,811 (2011)34.0km
Apple Valley72,174 (2017)42.7km


A former W occurrence/mine located in the E½SE¼ sec. 7, T7N, R2E, SBM, about 4.4 km N of Ord Mountain (coordinates of record)(11 air miles southward from Daggett), on private land. Discovered in 1951. First production was 1952. MRDS database accuracy for this location is not stated. Tucker (1943) erroneously listed the location of this mine in T7N, R3E. It is correctly identified in the other references as T7N, R2E. This operation mined scheelite during a brief period in the 1950's.

Mineralization is hosted in hornfels and metavolcanics. The ore body is irregular in form, strikes N10-20W and dips 68SW at a width of 2.44 meters. Controls for ore emplacement included a shear zone. There are some E-trending rhyolite dikes. 2 lime-magnesium silicate dikes about 180 feet apart traverse the country N20W. Associated rocks include diorite. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).

Workings include underground openings comprised of 500 feet of workings explored by open cuts and a shallow shaft inclined 50 degrees SW. 200 feet W of the shaft is an open cut ending in a vertical underhand stope that is 6 feet wide, 20 feet long and 30 feet deep.

A few hundred tons of ore were mined. Some ore was reported to have assayed 1.4% WO3, with an average grade of less than 1% WO3. No production figures are available.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


5 valid minerals.

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Reference: Housley, R. (2001) Microbits - Bulletin of the Southern California Micro-Mineralogists (February-March 2001)
Albite
Formula: Na(AlSi3O8)
Reference: Housley, R. (2001) Microbits - Bulletin of the Southern California Micro-Mineralogists (February-March 2001)
Calcite
Formula: CaCO3
Reference: Housley, R. (2001) Microbits - Bulletin of the Southern California Micro-Mineralogists (February-March 2001)
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Housley, R. (2001) Microbits - Bulletin of the Southern California Micro-Mineralogists (February-March 2001)
'Manganese Oxides'
Reference: Housley, R. (2001) Microbits - Bulletin of the Southern California Micro-Mineralogists (February-March 2001)
Scheelite
Formula: Ca(WO4)
Reference: Weber, F.H., Jr. (1963c), Geology and mineral deposits of the Ord Mountain district San Bernardino County, California: California Division Mines & Geology Special Report 77: 43; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 337.

List of minerals arranged by Strunz 10th Edition classification

Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Scheelite7.GA.05Ca(WO4)
Group 9 - Silicates
Actinolite9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Albite9.FA.35Na(AlSi3O8)
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Unclassified Minerals, Rocks, etc.
'Garnet Group'-X3Z2(SiO4)3
'Limonite'-(Fe,O,OH,H2O)
'Manganese Oxides'-

List of minerals arranged by Dana 8th Edition classification

Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
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)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'Garnet Group'-X3Z2(SiO4)3
'Limonite'-(Fe,O,OH,H2O)
'Manganese Oxides'-

List of minerals for each chemical element

HHydrogen
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Limonite(Fe,O,OH,H2O)
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
CCarbon
C CalciteCaCO3
OOxygen
O ScheeliteCa(WO4)
O Garnet GroupX3Z2(SiO4)3
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O CalciteCaCO3
O Limonite(Fe,O,OH,H2O)
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O AlbiteNa(AlSi3O8)
NaSodium
Na AlbiteNa(AlSi3O8)
MgMagnesium
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
AlAluminium
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al AlbiteNa(AlSi3O8)
SiSilicon
Si Garnet GroupX3Z2(SiO4)3
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si AlbiteNa(AlSi3O8)
CaCalcium
Ca ScheeliteCa(WO4)
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca CalciteCaCO3
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
FeIron
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe Limonite(Fe,O,OH,H2O)
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
WTungsten
W ScheeliteCa(WO4)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A) In-text Citation No.
Tucker, W. Burling & Reid J. Sampson (1943b), Mineral resources of San Bernardino County: California Journal of Mines and Geology, California Division Mines (Report 39): 39(4): 504.
Wright, L.A., et al (1953), Mines and mineral resources of San Bernardino County, California: California Journal of Mines and Geology, California Division of Mines (Report 49): 49(1-2): 153.
Weber, F.H., Jr. (1963c), Geology and mineral deposits of the Ord Mountain district San Bernardino County, California: California Division Mines & Geology Special Report 77: 43-44, Pl. 1.
Southern Pacific Company (1964b) Minerals for Industry, Summary of Geological Survey 1955 - 1961: Vol III - 242 pp., Southern California, Southern Pacific Co., San Francisco, CA 94105: 152.
USGS Miscellaneous Geological Investigations map file I-427, scale 1:62,500 (1964), and accompanying text: 5.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 337.
Housley, R. (2001), Microbits - Bulletin of the Southern California Micro-Mineralogists (February-March 2001).
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10008641 & 10212780.
U.S. Bureau of Mines, Minerals Availability System (MAS) file #0060711379.

Other Databases

USGS MRDS Record:10008641

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate

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