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Dinning Rutile prospect, Clermont Mills, Harford County, Maryland, USAi
Regional Level Types
Dinning Rutile prospectProspect
Clermont Mills- not defined -
Harford CountyCounty
MarylandState
USACountry

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Latitude & Longitude (WGS84):
39° 42' 0'' North , 76° 22' 58'' West
Latitude & Longitude (decimal):
39.70002,-76.38298
GeoHash:
G#: dr19vg5t7
GRN:
N27W43
Type:
Prospect
KΓΆppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Pylesville693 (2011)1.4km
Delta724 (2017)5.7km
Susquehanna Trails2,264 (2017)6.6km
Fawn Grove456 (2017)6.7km
Jarrettsville2,916 (2011)13.4km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Baltimore Mineral SocietyBaltimore, Maryland50km
Chesapeake Gem & Mineral SocietyBaltimore, Maryland50km
Gem Cutters Guild of Baltimore, Inc.Baltimore, Maryland50km
Mindat Locality ID:
66773
Long-form identifier:
mindat:1:2:66773:8
GUID (UUID V4):
adfa8a21-644d-4f5a-b5e5-259b0796e5a8


The deposit was discovered in 1925. Shaft and tenches were dug by the 1930s in an altered ultramafic rock. The rutile was as dark red crystals disseminated in chlorite. Also notable was the occurrence of large magnetite octahedra in schist and limonite pseudomorphs after pyrite cubes.

Alteration: Ilmenite Leucoxenitized

Rock formation(s): Wissahickon Form-Schist, Graywacke


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


8 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

β“˜ Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
β“˜ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
β“˜ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜ 'Chlorite Group'
β“˜ Dolomite
Formula: CaMg(CO3)2
β“˜ Ilmenite
Formula: Fe2+TiO3
β“˜ 'Limonite'
β“˜ Magnetite
Formula: Fe2+Fe3+2O4
β“˜ Pyrite
Formula: FeS2
β“˜ Rutile
Formula: TiO2
β“˜ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
β“˜ Talc
Formula: Mg3Si4O10(OH)2
β“˜ Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
β“˜Magnetite4.BB.05Fe2+Fe3+2O4
β“˜Ilmenite4.CB.05Fe2+TiO3
β“˜Rutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
β“˜Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
β“˜Dolomite5.AB.10CaMg(CO3)2
Group 9 - Silicates
β“˜Zircon9.AD.30Zr(SiO4)
β“˜Talc9.EC.05Mg3Si4O10(OH)2
Unclassified
β“˜'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜'Chlorite Group'-
β“˜'Limonite'-
β“˜'Serpentine Subgroup'-D3[Si2O5](OH)4
β“˜'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hβ“˜ TalcMg3Si4O10(OH)2
Hβ“˜ Serpentine SubgroupD3[Si2O5](OH)4
Hβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
CCarbon
Cβ“˜ AnkeriteCa(Fe2+,Mg)(CO3)2
Cβ“˜ DolomiteCaMg(CO3)2
OOxygen
Oβ“˜ AnkeriteCa(Fe2+,Mg)(CO3)2
Oβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oβ“˜ DolomiteCaMg(CO3)2
Oβ“˜ IlmeniteFe2+TiO3
Oβ“˜ MagnetiteFe2+Fe23+O4
Oβ“˜ RutileTiO2
Oβ“˜ TalcMg3Si4O10(OH)2
Oβ“˜ ZirconZr(SiO4)
Oβ“˜ Serpentine SubgroupD3[Si2O5](OH)4
Oβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
MgMagnesium
Mgβ“˜ AnkeriteCa(Fe2+,Mg)(CO3)2
Mgβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgβ“˜ DolomiteCaMg(CO3)2
Mgβ“˜ TalcMg3Si4O10(OH)2
AlAluminium
Alβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
SiSilicon
Siβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siβ“˜ TalcMg3Si4O10(OH)2
Siβ“˜ ZirconZr(SiO4)
Siβ“˜ Serpentine SubgroupD3[Si2O5](OH)4
PPhosphorus
Pβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sβ“˜ PyriteFeS2
ClChlorine
Clβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
CaCalcium
Caβ“˜ AnkeriteCa(Fe2+,Mg)(CO3)2
Caβ“˜ DolomiteCaMg(CO3)2
Caβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Tiβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiβ“˜ IlmeniteFe2+TiO3
Tiβ“˜ RutileTiO2
FeIron
Feβ“˜ AnkeriteCa(Fe2+,Mg)(CO3)2
Feβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feβ“˜ IlmeniteFe2+TiO3
Feβ“˜ MagnetiteFe2+Fe23+O4
Feβ“˜ PyriteFeS2
ZrZirconium
Zrβ“˜ ZirconZr(SiO4)

Other Databases

Link to USGS MRDS:10068347

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

(n.d.)
Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland , 92 p.
Tomlinson, W. H. (1946) Rutile in Harford County, Maryland: American Mineralogist: 31 (5-6): 322-325.
Pearre, N. & A. V. Heyl (1960) Mineral deposits in serpentine rocks of the Piedmont Upland, Maryland, Pennsylvania and Delaware: U. S. Geological Survey: Bulletin 1082K: 793.
Herz (1970) USGS Professional Paper 700-C: 43.
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