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Cedar Mountain Stone Corp. Quarry (A. H. Smith quarry), Mitchell, Culpeper Co., Virginia, USAi
Regional Level Types
Cedar Mountain Stone Corp. Quarry (A. H. Smith quarry)Quarry
Mitchell- not defined -
Culpeper Co.County
VirginiaState
USACountry

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Key
Latitude & Longitude (WGS84):
38° 21' 38'' North , 78° 2' 57'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Woodberry Forest112 (2018)9.9km
Merrimac1,785 (2006)10.5km
Culpeper17,557 (2017)13.3km
Orange4,947 (2017)13.9km
Brightwood1,001 (2011)14.3km


The Cedar Mountain quarry is excavated in the upper part of the concave diabase sheet known as the Rapidan diabase lopolith, located near the southern end of the Culpeper Basin. Around 1998 mining exposed areas of intense hydrothermal alteration and secondary mineral deposition. The material exposed in the late 1990’s was a particularly good example of secondary mineral deposition that is not rare in diabase intrusions and that begins at somewhat higher temperatures than the mineral assemblages typical of basalt flows in the eastern US.

During the deposition of the well known copper-prehnite-zeolite mineral assemblages in the Watchung basalts in New Jersey peak temperatures probably reached 220 deg. C. The epidote-amphibole assemblages encountered in diabase intrusions like that exposed in the Cedar Mountain quarry were estimated by Jenkins and Kearns (2007) to have crystallized at 350 deg. C.

The Cedar Mountain quarry also contains a zeolite mineral assemblage more typical of both the basalt flows and diabase intrusions of eastern North America. Although there is overlap, the zeolites tend to be later and to have crystallized at lower temperatures.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


14 valid minerals.

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Albite
Formula: Na(AlSi3O8)
Reference: Virginia Minerals, Vol. 48, No. 2/3, May/August 2002
'Amphibole Supergroup'
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Reference: Virginia Minerals, Vol. 48, No. 2/3, May/August 2002
'Amphibole Supergroup var: Byssolite'
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Reference: Virginia Minerals, Vol. 48, No. 2/3, May/August 2002
'Apophyllite'
Barrerite
Formula: (Na,K,Ca0.5)2[Al2Si7O18] · 7H2O
Reference: Minerals of Virginia, 1990 by R. V. Dietrich
Calcite
Formula: CaCO3
'Chabazite'
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Virginia Minerals, Vol. 48, No. 2/3, May/August 2002
Laumontite
Formula: CaAl2Si4O12 · 4H2O
Nontronite ?
Formula: Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Colour: Light Tan
Description: Found as a Pseudomorph of Pectolite.
Reference: www.VaRockHound.com
Opal
Formula: SiO2 · nH2O
Opal var: Opal-AN
Formula: SiO2 · nH2O
Pectolite
Formula: NaCa2Si3O8(OH)
Reference: Minerals of Virginia 1990 by R. V. Dietrich
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Reference: Minerals of Virginia 1990 by R. V. Dietrich; Virginia Minerals, Vol. 48, No. 2/3, May/August 2002
Pyrite
Formula: FeS2
Quartz
Formula: SiO2
Stellerite
Formula: Ca4(Si28Al8)O72 · 28H2O
Reference: Kearns, L.E., Jenkins, R.N., and Lipscomb, D. (2007) 34th Rochester Mineralogical Symposium, Contributed Papers.
'Stilbite subgroup'
Titanite
Formula: CaTi(SiO4)O

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Opal4.DA.10SiO2 · nH2O
var: Opal-AN4.DA.10SiO2 · nH2O
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 9 - Silicates
Actinolite9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Albite9.FA.35Na(AlSi3O8)
Barrerite9.GE.15(Na,K,Ca0.5)2[Al2Si7O18] · 7H2O
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Laumontite9.GB.10CaAl2Si4O12 · 4H2O
Nontronite ?9.EC.40Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Pectolite9.DG.05NaCa2Si3O8(OH)
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Stellerite9.GE.15Ca4(Si28Al8)O72 · 28H2O
Titanite9.AG.15CaTi(SiO4)O
Unclassified Minerals, Rocks, etc.
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'var: Byssolite'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Apophyllite'-
'Chabazite'-
'Stilbite subgroup'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
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 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=3
Pectolite65.2.1.4aNaCa2Si3O8(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 clays
Nontronite ?71.3.1a.3Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Group 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 4-membered rings
Prehnite72.1.3.1Ca2Al2Si3O10(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Barrerite77.1.4.5(Na,K,Ca0.5)2[Al2Si7O18] · 7H2O
Laumontite77.1.1.4CaAl2Si4O12 · 4H2O
Stellerite77.1.4.4Ca4(Si28Al8)O72 · 28H2O
Unclassified Minerals, Mixtures, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'var: Byssolite'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Apophyllite'-
'Chabazite'-
Opal
var: Opal-AN
-SiO2 · nH2O
'Stilbite subgroup'-

List of minerals for each chemical element

HHydrogen
H LaumontiteCaAl2Si4O12 · 4H2O
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H PrehniteCa2Al2Si3O10(OH)2
H PectoliteNaCa2Si3O8(OH)
H Opal (var: Opal-AN)SiO2 · nH2O
H Amphibole Supergroup (var: Byssolite)AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
H Barrerite(Na,K,Ca0.5)2[Al2Si7O18] · 7H2O
H StelleriteCa4(Si28Al8)O72 · 28H2O
H OpalSiO2 · nH2O
H Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
H NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
CCarbon
C CalciteCaCO3
OOxygen
O LaumontiteCaAl2Si4O12 · 4H2O
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O AlbiteNa(AlSi3O8)
O CalciteCaCO3
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O QuartzSiO2
O PrehniteCa2Al2Si3O10(OH)2
O TitaniteCaTi(SiO4)O
O PectoliteNaCa2Si3O8(OH)
O Opal (var: Opal-AN)SiO2 · nH2O
O Amphibole Supergroup (var: Byssolite)AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
O Barrerite(Na,K,Ca0.5)2[Al2Si7O18] · 7H2O
O StelleriteCa4(Si28Al8)O72 · 28H2O
O OpalSiO2 · nH2O
O Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
O NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
FFluorine
F Amphibole Supergroup (var: Byssolite)AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
F Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
NaSodium
Na AlbiteNa(AlSi3O8)
Na PectoliteNaCa2Si3O8(OH)
Na Barrerite(Na,K,Ca0.5)2[Al2Si7O18] · 7H2O
Na NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
MgMagnesium
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
AlAluminium
Al LaumontiteCaAl2Si4O12 · 4H2O
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al AlbiteNa(AlSi3O8)
Al PrehniteCa2Al2Si3O10(OH)2
Al Amphibole Supergroup (var: Byssolite)AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Al Barrerite(Na,K,Ca0.5)2[Al2Si7O18] · 7H2O
Al StelleriteCa4(Si28Al8)O72 · 28H2O
Al Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Al NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
SiSilicon
Si LaumontiteCaAl2Si4O12 · 4H2O
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si AlbiteNa(AlSi3O8)
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si QuartzSiO2
Si PrehniteCa2Al2Si3O10(OH)2
Si TitaniteCaTi(SiO4)O
Si PectoliteNaCa2Si3O8(OH)
Si Opal (var: Opal-AN)SiO2 · nH2O
Si Amphibole Supergroup (var: Byssolite)AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Si Barrerite(Na,K,Ca0.5)2[Al2Si7O18] · 7H2O
Si StelleriteCa4(Si28Al8)O72 · 28H2O
Si OpalSiO2 · nH2O
Si Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Si NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
SSulfur
S PyriteFeS2
ClChlorine
Cl Amphibole Supergroup (var: Byssolite)AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Cl Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
KPotassium
K Barrerite(Na,K,Ca0.5)2[Al2Si7O18] · 7H2O
CaCalcium
Ca LaumontiteCaAl2Si4O12 · 4H2O
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca CalciteCaCO3
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca PrehniteCa2Al2Si3O10(OH)2
Ca TitaniteCaTi(SiO4)O
Ca PectoliteNaCa2Si3O8(OH)
Ca Barrerite(Na,K,Ca0.5)2[Al2Si7O18] · 7H2O
Ca StelleriteCa4(Si28Al8)O72 · 28H2O
TiTitanium
Ti TitaniteCaTi(SiO4)O
Ti Amphibole Supergroup (var: Byssolite)AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Ti Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
FeIron
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe PyriteFeS2
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Jenkins, R. and Kearns,L., 2007, Mineral Assemblage of Cedar Mountain Quarry, 2007 Student Research Symposium, JMU, Harrisonburg, Va.


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