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Wiant's Quarry (Weiant Quarry), Pilot, Cecil County, Maryland, USAi
Regional Level Types
Wiant's Quarry (Weiant Quarry)Quarry
PilotVillage
Cecil CountyCounty
MarylandState
USACountry

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Latitude & Longitude (WGS84):
39° 42' 32'' North , 76° 11' 21'' West
Latitude & Longitude (decimal):
39.70892,-76.18935
GeoHash:
G#: dr1cfkb95
GRN:
N27W43
Type:
Quarry
KΓΆppen climate type:
Cfa : Humid subtropical climate
Mindat Locality ID:
51530
Long-form identifier:
mindat:1:2:51530:1
GUID (UUID V4):
30f1931f-d053-4e1a-a12a-147190440abb


A desilicated pegmatite in serpentine.

In the American Mineralogist Vol.12 Num. 11, Earl V. Shannon, 1927, states from Samuel G. Gordon's paper on Desilicated Granitic Pegmatites of the Vicinity of the Pennsylvania-Maryland State Line:

"That the albitite of Wiant's quarry, three quarters of a mile northeast of Pilot, Cecil County, Maryland, is filled with miarolitic cavities which are lined with minute, colorless, albite crystals. He further says that the minute, transparent, greenish, highly modified beryl crystals occur rarely implanted on the albite, while not infrequently the rest of the cavity is filled with matted masses of dark green actinolite needles.”

β€œMr. Gordon then suggested that it was probable that the supposed beryl crystals were in reality apatite. Mr. Gordon very kindly forwarded the writer several specimens which he had previously collected. These have been studied in the Museum’s Laboratory and the mineral was found to be apatite.”

β€œThe apatite crystals are sparsely scattered over the drusy crusts of colorless or brown, iron-stained albite crystals which line the narrow miarolitic cavities in massive white albite. Individual crystals of the apatites reach a length of 4 or 5 mm, with a thickness of 2 mm, although most of them are somewhat smaller. The larger ones are green while the smaller ones are colorless and are not easy to distinguish from the colorless albite crystals on which they rest. The longer apatite crystals show cleavage parallel to the base. Many of the larger ones are bluish-green, partly opaque, and rather soft and friable as though they had suffered partial disintegration through weathering.”
Deposit: The chrome bearing sand is covered by about 5 ft of overburden. The chromite content is said to be lo W and cr Fe ratio fair. No systematic sampling or investigation of the deposit seems to have been done. Date of comments 1975.

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


11 valid minerals. 1 erroneous literature entry.

Detailed Mineral List:

β“˜ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
β“˜ Albite
Formula: Na(AlSi3O8)
β“˜ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
β“˜ Beidellite
Formula: (Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
β“˜ Beryl
Formula: Be3Al2(Si6O18)
Description: Originally reported as beryl, Samuel G. Gordon (1920's) suggested that the supposed beryls were probably apatite. This was later proven by Earl V. Shannon who analysed some of these specimens which Gordon had sent him.
β“˜ Calcite
Formula: CaCO3
β“˜ 'Chlorite Group'
β“˜ 'Deweylite'
Formula: Mg4Si3O10 · 6H2O ?
β“˜ Dolomite
Formula: CaMg(CO3)2
β“˜ Magnesite
Formula: MgCO3
β“˜ Opal
Formula: SiO2 · nH2O
β“˜ Pyrite
Formula: FeS2
β“˜ Quartz
Formula: SiO2
β“˜ Quartz var. Chalcedony
Formula: SiO2
β“˜ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
β“˜ Talc
Formula: Mg3Si4O10(OH)2
β“˜ Vermiculite
Formula: Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
β“˜ 'Wad'

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“˜Quartz4.DA.05SiO2
β“˜var. Chalcedony4.DA.05SiO2
β“˜Opal4.DA.10SiO2 Β· nH2O
Group 5 - Nitrates and Carbonates
β“˜Magnesite5.AB.05MgCO3
β“˜Calcite5.AB.05CaCO3
β“˜Dolomite5.AB.10CaMg(CO3)2
Group 9 - Silicates
β“˜Beryl ?9.CJ.05Be3Al2(Si6O18)
β“˜Actinolite9.DE.10β—»Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
β“˜Talc9.EC.05Mg3Si4O10(OH)2
β“˜Beidellite9.EC.40(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 Β· nH2O
β“˜Vermiculite9.EC.50Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 Β· 8H2O
β“˜Albite9.FA.35Na(AlSi3O8)
Unclassified
β“˜'Deweylite'-Mg4Si3O10 Β· 6H2O ?
β“˜'Chlorite Group'-
β“˜'Wad'-
β“˜'Serpentine Subgroup'-D3[Si2O5](OH)4
β“˜'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hβ“˜ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Hβ“˜ DeweyliteMg4Si3O10 · 6H2O ?
Hβ“˜ OpalSiO2 · nH2O
Hβ“˜ TalcMg3Si4O10(OH)2
Hβ“˜ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Hβ“˜ Serpentine SubgroupD3[Si2O5](OH)4
Hβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
BeBeryllium
Beβ“˜ BerylBe3Al2(Si6O18)
CCarbon
Cβ“˜ CalciteCaCO3
Cβ“˜ DolomiteCaMg(CO3)2
Cβ“˜ MagnesiteMgCO3
OOxygen
Oβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oβ“˜ AlbiteNa(AlSi3O8)
Oβ“˜ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Oβ“˜ BerylBe3Al2(Si6O18)
Oβ“˜ CalciteCaCO3
Oβ“˜ Quartz var. ChalcedonySiO2
Oβ“˜ DeweyliteMg4Si3O10 · 6H2O ?
Oβ“˜ DolomiteCaMg(CO3)2
Oβ“˜ MagnesiteMgCO3
Oβ“˜ OpalSiO2 · nH2O
Oβ“˜ QuartzSiO2
Oβ“˜ TalcMg3Si4O10(OH)2
Oβ“˜ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Oβ“˜ Serpentine SubgroupD3[Si2O5](OH)4
Oβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naβ“˜ AlbiteNa(AlSi3O8)
Naβ“˜ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
MgMagnesium
Mgβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgβ“˜ DeweyliteMg4Si3O10 · 6H2O ?
Mgβ“˜ DolomiteCaMg(CO3)2
Mgβ“˜ MagnesiteMgCO3
Mgβ“˜ TalcMg3Si4O10(OH)2
Mgβ“˜ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
AlAluminium
Alβ“˜ AlbiteNa(AlSi3O8)
Alβ“˜ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Alβ“˜ BerylBe3Al2(Si6O18)
Alβ“˜ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
SiSilicon
Siβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siβ“˜ AlbiteNa(AlSi3O8)
Siβ“˜ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Siβ“˜ BerylBe3Al2(Si6O18)
Siβ“˜ Quartz var. ChalcedonySiO2
Siβ“˜ DeweyliteMg4Si3O10 · 6H2O ?
Siβ“˜ OpalSiO2 · nH2O
Siβ“˜ QuartzSiO2
Siβ“˜ TalcMg3Si4O10(OH)2
Siβ“˜ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
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)
CaCalcium
Caβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caβ“˜ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Caβ“˜ CalciteCaCO3
Caβ“˜ DolomiteCaMg(CO3)2
Caβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
FeIron
Feβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feβ“˜ PyriteFeS2
Feβ“˜ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O

Other Databases

Link to USGS MRDS:10266794

Other Regions, Features and Areas containing this locality

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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

Pearre N Heyl a Jr USGS Bul (1082)k Pg 784 1960
Shannon, Earl V., (1927), Apatite Crystals from the Wiant's Quarry, near Pilot, Maryland. American Mineralogist: 12: 408-410.
Singewald, J. T. (1928) Notes on feldspar, quartz, chrome and manganese in Maryland: Maryland Geological Survey vol. 12 part 2: 91-194.
Ostrander, C. W. & W. E. Price (1940) Minerals of Maryland: Natural History Society of Maryland , 92 p.
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: 813.
www.minsocam.org (n.d.) http://www.minsocam.org/ammin/AM12/AM12_408.pdf
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