Francestown Soapstone quarry, Francestown, Hillsborough County, New Hampshire, USAi
| Regional Level Types | |
|---|---|
| Francestown Soapstone quarry | Quarry |
| Francestown | - not defined - |
| Hillsborough County | County |
| New Hampshire | State |
| USA | Country |
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Latitude & Longitude (WGS84):
42° 59' 53'' North , 71° 52' 26'' West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~0km
Type:
KΓΆppen climate type:
Mindat Locality ID:
9271
Long-form identifier:
mindat:1:2:9271:8
GUID (UUID V4):
be627044-1d60-401b-9ab8-37264bbeffb3
Soapstone was discovered here by Daniel Fuller in 1794 while plowing his field (Jackson, 1844), and first worked in the early nineteenth century, possibly in one of these years: 1802 (Jackson, 1844); 1804 (Farmer and Moore, 1823; Carter, 1831) or 1808 (Cochrane and Wood, 1895). The deposit is in talc-phlogopite-actinolite schist and talc-phlogopite schist. The Francestown Soapstone Company was incorporated on June 22, 1865. The quarry closed in 1891.
"Dr. Charles T. Jackson, the distinguished geologist, testifying as an expert in a law case said: 'The Francestown stone, for color, beauty, and evenness, surpasses all other soapstone known.'"(Cochrane and Wood, 1895).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| β Actinolite Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| β Arsenopyrite Formula: FeAsS |
| β 'Chlorite Group' |
| β 'Jasper' |
| β Phlogopite Formula: KMg3(AlSi3O10)(OH)2 |
| β Pyrite Formula: FeS2 |
| β Pyrrhotite Formula: Fe1-xS |
| β Quartz Formula: SiO2 |
| β 'Soapstone' |
| β Talc Formula: Mg3Si4O10(OH)2 |
| β Talc var. Steatite Formula: Mg3(Si4O10)(OH)2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| β | Pyrrhotite | 2.CC.10 | Fe1-xS |
| β | Pyrite | 2.EB.05a | FeS2 |
| β | Arsenopyrite | 2.EB.20 | FeAsS |
| Group 4 - Oxides and Hydroxides | |||
| β | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| β | Actinolite | 9.DE.10 | β»Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| β | Talc var. Steatite | 9.EC.05 | Mg3(Si4O10)(OH)2 |
| β | 9.EC.05 | Mg3Si4O10(OH)2 | |
| β | Phlogopite | 9.EC.20 | KMg3(AlSi3O10)(OH)2 |
| Unclassified | |||
| β | 'Chlorite Group' | - | |
| β | 'Jasper' | - | |
| β | 'Soapstone' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| H | β Phlogopite | KMg3(AlSi3O10)(OH)2 |
| H | β Talc var. Steatite | Mg3(Si4O10)(OH)2 |
| H | β Talc | Mg3Si4O10(OH)2 |
| O | Oxygen | |
| O | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| O | β Phlogopite | KMg3(AlSi3O10)(OH)2 |
| O | β Quartz | SiO2 |
| O | β Talc var. Steatite | Mg3(Si4O10)(OH)2 |
| O | β Talc | Mg3Si4O10(OH)2 |
| Mg | Magnesium | |
| Mg | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Mg | β Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Mg | β Talc var. Steatite | Mg3(Si4O10)(OH)2 |
| Mg | β Talc | Mg3Si4O10(OH)2 |
| Al | Aluminium | |
| Al | β Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Si | Silicon | |
| Si | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Si | β Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Si | β Quartz | SiO2 |
| Si | β Talc var. Steatite | Mg3(Si4O10)(OH)2 |
| Si | β Talc | Mg3Si4O10(OH)2 |
| S | Sulfur | |
| S | β Arsenopyrite | FeAsS |
| S | β Pyrite | FeS2 |
| S | β Pyrrhotite | Fe1-xS |
| K | Potassium | |
| K | β Phlogopite | KMg3(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Fe | Iron | |
| Fe | β Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Fe | β Arsenopyrite | FeAsS |
| Fe | β Pyrite | FeS2 |
| Fe | β Pyrrhotite | Fe1-xS |
| As | Arsenic | |
| As | β Arsenopyrite | FeAsS |
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Ganderia DomainDomain
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References
