Soapstone Valley, NW Washington, District of Columbia (Washington D.C.), USAi
Regional Level Types | |
---|---|
Soapstone Valley | Valley |
NW Washington | - not defined - |
District of Columbia (Washington D.C.) | Federal District |
USA | Country |
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Latitude & Longitude (WGS84):
38° 56' 44'' North , 77° 3' 32'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Soapstone Valley is a park set aside in the northwestern part of the District of Columbia. It includes the site of an old steatite deposit that may have been worked in prehistoric times by Native Americans. In historic times this was refered to as the "Rose Hill Quarry". The deposit is largely worked out and the quarry long abandoned. Outcrops of granitic rocks and gneiss do occur in the park and can be seen from hiking trails. Additional interesting material can be found in the stream gravels, which are largely derived from Quaternary upland terrace deposits. Collecting, however, is not allowed.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
5 valid minerals.
Detailed Mineral List:
ⓘ Actinolite Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 Reference: Bernstein, Lawrence (1976) Minerals of Washington D.C. and vicinity: U.S. Geological Survey: Open File Report 76-849, 183 p. |
ⓘ 'Chlorite Group' Reference: Bernstein, Lawrence (1976) Minerals of Washington D.C. and vicinity: U.S. Geological Survey: Open File Report 76-849, 183 p. |
ⓘ Goethite Formula: α-Fe3+O(OH) Reference: Bernstein, Lawrence (1976) Minerals of Washington D.C. and vicinity: U.S. Geological Survey: Open File Report 76-849, 183 p. |
ⓘ Magnetite Formula: Fe2+Fe3+2O4 Reference: A.Mathauser collection |
ⓘ Pyrite Formula: FeS2 Reference: A.Mathauser collection; Bernstein, Lawrence (1976) Minerals of Washington D.C. and vicinity: U.S. Geological Survey: Open File Report 76-849, 183 p. |
ⓘ Talc Formula: Mg3Si4O10(OH)2 Reference: A.Mathauser collection |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
ⓘ | Pyrite | 2.EB.05a | FeS2 |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Goethite | 4.00. | α-Fe3+O(OH) |
ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
Group 9 - Silicates | |||
ⓘ | Actinolite | 9.DE.10 | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
ⓘ | Talc | 9.EC.05 | Mg3Si4O10(OH)2 |
Unclassified Minerals, Rocks, etc. | |||
ⓘ | 'Chlorite Group' | - |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Talc | Mg3Si4O10(OH)2 |
H | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
H | ⓘ Goethite | α-Fe3+O(OH) |
O | Oxygen | |
O | ⓘ Talc | Mg3Si4O10(OH)2 |
O | ⓘ Magnetite | Fe2+Fe23+O4 |
O | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
O | ⓘ Goethite | α-Fe3+O(OH) |
Mg | Magnesium | |
Mg | ⓘ Talc | Mg3Si4O10(OH)2 |
Mg | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
Si | Silicon | |
Si | ⓘ Talc | Mg3Si4O10(OH)2 |
Si | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
S | Sulfur | |
S | ⓘ Pyrite | FeS2 |
Ca | Calcium | |
Ca | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
Fe | Iron | |
Fe | ⓘ Pyrite | FeS2 |
Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
Fe | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
Fe | ⓘ Goethite | α-Fe3+O(OH) |
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Piedmontia DomainDomain
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