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Ben Murphy Mica Mine, Scaggsville, Howard County, Maryland, USAi
Regional Level Types
Ben Murphy Mica MineMine
Scaggsville- not defined -
Howard CountyCounty
MarylandState
USACountry

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Latitude & Longitude (WGS84):
39° 8' 8'' North , 76° 55' 0'' West
Latitude & Longitude (decimal):
39.13556,-76.91676
GeoHash:
G#: dqcq9sqvj
GRN:
N27W43
Type:
Mine
KΓΆppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Scaggsville24,333 (2017)1.8km
Fulton2,049 (2011)1.8km
Burtonsville8,323 (2011)3.0km
North Laurel4,474 (2011)4.0km
West Laurel4,230 (2011)4.1km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Central Maryland Rock and Mineral Collectors ExchangeElkridge, Maryland19km
Gem, Lapidary, and Mineral Society of Montgomery County, MD., Inc.Rockville, Maryland21km
American Fossil FederationBowie, Maryland27km
Maryland Geological SocietyBowie, Maryland27km
Baltimore Mineral SocietyBaltimore, Maryland31km
Mindat Locality ID:
42690
Long-form identifier:
mindat:1:2:42690:0
GUID (UUID V4):
c26aa3dc-a4de-4939-8b63-91bea8cab233


Years operated - 1910 to 1945

The Ben Murphy Mica Mine location is adjacent to the south-bound lanes of Maryland Rt 29, south of the Rt 216 exit, approximatley 1.5 miles north of Rocky Gorge. The road leading to the dump site is obscure and gated (locked) as the area now sits on property of the WSSC (Washington Suburban Sanitary Commission). The property is posted "No Trespassing" and is patrolled regularly. Permission must be obtained before entering the site.

The pits in the pegmatite that constituted the mine are now located under present day Rt 29. All that remains are the dumps.

In pegmatite of the Wissahickon Group.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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


Mineral List


10 valid minerals.

Detailed Mineral List:

β“˜ Albite
Formula: Na(AlSi3O8)
β“˜ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
β“˜ Autunite
Formula: Ca(UO2)2(PO4)2 · 10-12H2O
β“˜ Beryl
Formula: Be3Al2(Si6O18)
β“˜ 'Columbite-(Fe)-Columbite-(Mn) Series'
β“˜ Gahnite
Formula: ZnAl2O4
β“˜ Hematite
Formula: Fe2O3
β“˜ 'Limonite'
β“˜ Microcline
Formula: K(AlSi3O8)
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Description: Often with inclusions of gahnite, quartz, columbite-tantalite, spessartine, and iron oxides (limonite).
β“˜ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Quartz
Formula: SiO2
β“˜ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜ Spessartine
Formula: Mn2+3Al2(SiO4)3
β“˜ 'Tantalite'
Formula: (Mn,Fe)(Ta,Nb)2O6

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
β“˜Gahnite4.BB.05ZnAl2O4
β“˜Hematite4.CB.05Fe2O3
β“˜Quartz4.DA.05SiO2
Group 8 - Phosphates, Arsenates and Vanadates
β“˜Autunite8.EB.05Ca(UO2)2(PO4)2 Β· 10-12H2O
Group 9 - Silicates
β“˜Spessartine9.AD.25Mn2+3Al2(SiO4)3
β“˜Beryl9.CJ.05Be3Al2(Si6O18)
β“˜Schorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜Microcline9.FA.30K(AlSi3O8)
β“˜Albite9.FA.35Na(AlSi3O8)
Unclassified
β“˜'Limonite'-
β“˜'Tantalite'-(Mn,Fe)(Ta,Nb)2O6
β“˜'Columbite-(Fe)-Columbite-(Mn) Series'-
β“˜'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Hβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Hβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
BeBeryllium
Beβ“˜ BerylBe3Al2(Si6O18)
BBoron
Bβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
OOxygen
Oβ“˜ AlbiteNa(AlSi3O8)
Oβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Oβ“˜ BerylBe3Al2(Si6O18)
Oβ“˜ GahniteZnAl2O4
Oβ“˜ HematiteFe2O3
Oβ“˜ MicroclineK(AlSi3O8)
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ QuartzSiO2
Oβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Oβ“˜ SpessartineMn32+Al2(SiO4)3
Oβ“˜ Tantalite(Mn,Fe)(Ta,Nb)2O6
Oβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Oβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naβ“˜ AlbiteNa(AlSi3O8)
Naβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
AlAluminium
Alβ“˜ AlbiteNa(AlSi3O8)
Alβ“˜ BerylBe3Al2(Si6O18)
Alβ“˜ GahniteZnAl2O4
Alβ“˜ MicroclineK(AlSi3O8)
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Alβ“˜ SpessartineMn32+Al2(SiO4)3
Alβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siβ“˜ AlbiteNa(AlSi3O8)
Siβ“˜ BerylBe3Al2(Si6O18)
Siβ“˜ MicroclineK(AlSi3O8)
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ QuartzSiO2
Siβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Siβ“˜ SpessartineMn32+Al2(SiO4)3
Siβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
PPhosphorus
Pβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Pβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
ClChlorine
Clβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kβ“˜ MicroclineK(AlSi3O8)
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Kβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Caβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
MnManganese
Mnβ“˜ SpessartineMn32+Al2(SiO4)3
Mnβ“˜ Tantalite(Mn,Fe)(Ta,Nb)2O6
FeIron
Feβ“˜ HematiteFe2O3
Feβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Feβ“˜ Tantalite(Mn,Fe)(Ta,Nb)2O6
ZnZinc
Znβ“˜ GahniteZnAl2O4
NbNiobium
Nbβ“˜ Tantalite(Mn,Fe)(Ta,Nb)2O6
TaTantalum
Taβ“˜ Tantalite(Mn,Fe)(Ta,Nb)2O6
UUranium
Uβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O

Other Regions, Features and Areas containing this locality

North America 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

Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland , 92 p.
Bernstein, Lawrence (1980) Minerals of the Washington D. C. area: Maryland Geological Survey Educational Series 5, 148 p.
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