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Richmond Soapstone Quarry (Harris Quarry), Richmond, Cheshire Co., New Hampshire, USA

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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 42° 55' 11'' North , 72° 15' 4'' West (est.)
Margin of Error:~0km
Locality type:Quarry
Köppen climate type:Dfb : Warm-summer humid continental climate


Small soapstone quarry famous for its huge muscovite after cordierite pseudomorphs. Groups of crystals over 30 x 30 cm have been collected. Individual well-formed doubly terminated crystals to 20 x 10 x 10 cm. During the heyday of collecting, specimen size was dictated by how large a specimen could be extracted. Exceptional specimens were found by Dr. Warren Johanssen and Charles Palache found many excellent specimens in the 1940's as have collectors subsequently and the locality is still viable, although work now would be needed to clear the area. Specimens are difficult to obtain today and development work would be required to be successful. Located near a farm road in the woods behind a farmhouse.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


14 valid minerals.

Detailed Mineral List:

Anthophyllite
Formula: ☐{Mg2}{Mg5}(Si8O22)(OH)2
Reference: Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
Calcite
Formula: CaCO3
Reference: Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Reference: Harvard Mineralogical Museum, specimen no. 135562; ex-Tom Mortimer.
Cordierite
Formula: (Mg,Fe)2Al3(AlSi5O18)
Habit: Simple six-sided cross-sections with flat terminations
Colour: Dark olive green, dark greenish brown to Greenish black
Fluorescence: none
Description: Crystals here are unusually large for cordierite (eg: 3.3cm xl in Alfred Stevenson collection), but partially altered to greasy-luster dark greenish brown "pinite".
Reference: Francis, C. A. and D. E. Lange (1988): Four Occurrences of Dravite in Western New England (Rocks and Minerals 63:455).; Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
Dravite
Formula: Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Francis, C. A. and D. E. Lange (1988): Four Occurrences of Dravite in Western New England (Rocks and Minerals 63:455).; Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
Fluorapatite
Formula: Ca5(PO4)3F
Reference: Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: Ticknor, 1855. Part II: A Gazetteer of New Hampshire; Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
Gedrite
Formula: ☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
Reference: Schumacher, J.C. and Robinson, Peter (1987). Mineral chemistry and metasomatic growth of aluminous enclaves in gedrite-cordierite gneiss, southwestern New Hampshire, Journal of Petrology 28:1033-1073
'Hornblende'
Reference: Ticknor, 1855. Part II: A Gazetteer of New Hampshire; Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
Microcline
Formula: K(AlSi3O8)
Reference: Van King
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Van King
'Pinite'
Reference: Ticknor, 1855. Part II: A Gazetteer of New Hampshire
Pyrite
Formula: FeS2
Reference: Ticknor, 1855. Part II: A Gazetteer of New Hampshire; Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
Quartz
Formula: SiO2
Reference: Ticknor, 1855. Part II: A Gazetteer of New Hampshire; Francis, C. A. and D. E. Lange (1988): Four Occurrences of Dravite in Western New England (Rocks and Minerals 63:455).; Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
Rutile
Formula: TiO2
Reference: Ticknor, 1855. Part II: A Gazetteer of New Hampshire; Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
'Soapstone'
Reference: Francis, C. A. and D. E. Lange (1988): Four Occurrences of Dravite in Western New England (Rocks and Minerals 63:455).
Talc
Formula: Mg3Si4O10(OH)2
Reference: Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
'Pyrite'2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
'Quartz'4.DA.05SiO2
'Rutile'4.DB.05TiO2
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
Group 8 - Phosphates, Arsenates and Vanadates
'Fluorapatite'8.BN.05Ca5(PO4)3F
Group 9 - Silicates
'Anthophyllite'9.DE.05☐{Mg2}{Mg5}(Si8O22)(OH)2
'Clinochlore'9.EC.55Mg5Al(AlSi3O10)(OH)8
'Cordierite'9.CJ.10(Mg,Fe)2Al3(AlSi5O18)
'Dravite'9.CK.05Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
'Gedrite'9.DD.05☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
'Microcline'9.FA.30K(AlSi3O8)
'Muscovite'9.EC.15KAl2(AlSi3O10)(OH)2
'Schorl'9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
'Talc'9.EC.05Mg3Si4O10(OH)2
Unclassified Minerals, Rocks, etc.
'Garnet Group'-X3Z2(SiO4)3
'Hornblende'-
'Pinite'-
'Soapstone'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
AX2
Rutile4.4.1.1TiO2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with Al substituted rings
Cordierite61.2.1.1(Mg,Fe)2Al3(AlSi5O18)
Six-Membered Rings with borate groups
Dravite61.3.1.9Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Anthophyllite66.1.2.1☐{Mg2}{Mg5}(Si8O22)(OH)2
Gedrite66.1.2.5☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Talc71.2.1.3Mg3Si4O10(OH)2
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Clinochlore71.4.1.4Mg5Al(AlSi3O10)(OH)8
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Microcline76.1.1.5K(AlSi3O8)
Unclassified Minerals, Rocks, etc.
'Garnet Group'-X3Z2(SiO4)3
'Hornblende'-
'Pinite'-
'Soapstone'-

List of minerals for each chemical element

HHydrogen
H Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
H ClinochloreMg5Al(AlSi3O10)(OH)8
H DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
H Gedrite☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H TalcMg3Si4O10(OH)2
BBoron
B DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
C CalciteCaCO3
OOxygen
O Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
O CalciteCaCO3
O ClinochloreMg5Al(AlSi3O10)(OH)8
O Cordierite(Mg,Fe)2Al3(AlSi5O18)
O DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
O FluorapatiteCa5(PO4)3F
O Garnet GroupX3Z2(SiO4)3
O Gedrite☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
O MicroclineK(AlSi3O8)
O MuscoviteKAl2(AlSi3O10)(OH)2
O QuartzSiO2
O RutileTiO2
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O TalcMg3Si4O10(OH)2
FFluorine
F FluorapatiteCa5(PO4)3F
NaSodium
Na DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mg Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
Mg Cordierite(Mg,Fe)2Al3(AlSi5O18)
Mg DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Mg Gedrite☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
Mg TalcMg3Si4O10(OH)2
AlAluminium
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al Cordierite(Mg,Fe)2Al3(AlSi5O18)
Al DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Al Gedrite☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
Al MicroclineK(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
SiSilicon
Si Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si Cordierite(Mg,Fe)2Al3(AlSi5O18)
Si DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Si Garnet GroupX3Z2(SiO4)3
Si Gedrite☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
Si MicroclineK(AlSi3O8)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si TalcMg3Si4O10(OH)2
PPhosphorus
P FluorapatiteCa5(PO4)3F
SSulfur
S PyriteFeS2
KPotassium
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca CalciteCaCO3
Ca FluorapatiteCa5(PO4)3F
TiTitanium
Ti RutileTiO2
FeIron
Fe Cordierite(Mg,Fe)2Al3(AlSi5O18)
Fe PyriteFeS2
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Jackson, Charles (1844). Final Report on the Geology and Mineralogy of the State of New Hampshire.
Schumacher, J.C. and Robinson, Peter (1987). Mineral chemistry and metasomatic growth of aluminous enclaves in gedrite-cordierite gneiss, southwestern New Hampshire, Journal of Petrology 28:1033-1073.
Francis, C. A. and D. E. Lange (1988): Four Occurrences of Dravite in Western New England, Rocks and Minerals: 63: 455.
Rocks & Minerals (2005): New Hampshire Mineral Locality Index: 80: 242-261.
King, Vandall, personal files data.


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