Unnamed Chromite prospect 13 [of Pearre & Heyl], Owings Mills, Baltimore County, Maryland, USAi
| Regional Level Types | |
|---|---|
| Unnamed Chromite prospect 13 [of Pearre & Heyl] | Prospect |
| Owings Mills | - not defined - |
| Baltimore County | County |
| Maryland | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 24' 56'' North , 76° 49' 33'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Owings Mills | 30,622 (2011) | 4.0km |
| Garrison | 8,823 (2011) | 5.7km |
| Randallstown | 32,430 (2011) | 6.0km |
| Reisterstown | 25,968 (2015) | 6.0km |
| Milford Mill | 29,042 (2011) | 9.0km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Baltimore Mineral Society | Baltimore, Maryland | 23km |
| Chesapeake Gem & Mineral Society | Baltimore, Maryland | 23km |
| Gem Cutters Guild of Baltimore, Inc. | Baltimore, Maryland | 23km |
| Central Maryland Rock and Mineral Collectors Exchange | Elkridge, Maryland | 25km |
| Mason-Dixon Rock, Mineral, Gemological, & Lapidary Club | Hanover, Pennsylvania | 45km |
Mindat Locality ID:
143173
Long-form identifier:
mindat:1:2:143173:8
GUID (UUID V4):
d97d8bed-88d9-4602-83fb-7f35a9db3f71
Other/historical names associated with this locality:
Pit Mine
A former Cr occurrence/mine consisting of 2 shafts, a small open pit and a dump containing samples of chromite in serpentine, was found by Pearre and Heyl N-NE of the Choate Mine.
An unnamed chromite prospect along Choat Mine Trail (but not the Choat Mine) in the Soldiers Delight Natural Environment Area, 4 km northeast of Holbrook. Prospect 13 is shown on Plate 40 and Figure 66 as well as described in detail, as it appeared in the late 1950s, on page 757-757 of Pearre and Heyl (1960).
Allen V. Heyl was fond of noting that a hand sample of ore from the Soldiers Delight contained 1 ppm Pt, but never specified which mine it was from. The laurite ? of the present mineral list varies from (Ru, Os, Ir).26S.74 to (Ru,Os,Ni,Ir).27S.73 The apparent problem with the generally accepted formula for laurite is noted in the tables for Smith and Barnes (2102) on platinum group minerals from the Pennsylvania portion of the State Line Chromite District.
Local rocks include rocks of the Wissahickon Formation; Lower Pelitic Schist.
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
6 valid minerals.
Detailed Mineral List:
| ⓘ Chromite Formula: Fe2+Cr3+2O4 |
| ⓘ Clinochlore Formula: Mg5Al(AlSi3O10)(OH)8 References: |
| ⓘ Clinochlore var. Chromium-bearing Clinochlore Formula: Mg5(Al,Cr)2Si3O10(OH)8 References: |
| ⓘ Laurite ? Formula: RuS2 References: |
| ⓘ Magnesite Formula: MgCO3 |
| ⓘ Millerite Formula: NiS References: |
| ⓘ Quartz Formula: SiO2 References: |
| ⓘ 'Serpentine Subgroup' Formula: D3[Si2O5](OH)4 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Millerite | 2.CC.20 | NiS |
| ⓘ | Laurite ? | 2.EB.05a | RuS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Magnesite | 5.AB.05 | MgCO3 |
| Group 9 - Silicates | |||
| ⓘ | Clinochlore | 9.EC.55 | Mg5Al(AlSi3O10)(OH)8 |
| ⓘ | var. Chromium-bearing Clinochlore | 9.EC.55 | Mg5(Al,Cr)2Si3O10(OH)8 |
| Unclassified | |||
| ⓘ | 'Serpentine Subgroup' | - | D3[Si2O5](OH)4 |
List of minerals for each chemical element
Other Databases
| Link to USGS MRDS: | 10169984 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Piedmontia DomainDomain
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0240050010
