Cucamonga Mine (Cucamonga Zinc Mine; Blew Jordam Mine), Cucamonga Peak, Lytle Creek District, San Bernardino County, California, USAi
| Regional Level Types | |
|---|---|
| Cucamonga Mine (Cucamonga Zinc Mine; Blew Jordam Mine) | Mine |
| Cucamonga Peak | Peak |
| Lytle Creek District | Mining District |
| San Bernardino County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
34° 13' 48'' North , 117° 33' 18'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Lytle Creek | 701 (2011) | 6.0km |
| San Antonio Heights | 3,371 (2011) | 12.5km |
| Rancho Cucamonga | 175,236 (2017) | 14.2km |
| Wrightwood | 4,525 (2011) | 16.2km |
| Upland | 76,443 (2017) | 17.0km |
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 |
|---|---|---|
| Orange Belt Mineralogical Society | San Bernardino, California | 28km |
| Valley Prospectors, Inc. | San Bernardino, California | 28km |
| West End Prospectors Corporation | Norco, California | 33km |
| Victor Valley Gem and Mineral Club | Victorville, California | 42km |
| Monrovia Rock Hounds Inc. | Monrovia, California | 42km |
A former Cd-Zn-Pb-Ag occurrence/mine located in sec. 30, T2N, R6W, SBM, 2.9 km (1.8 miles) ENE of Cucamonga Peak (coordinates of record), in the headwaters area of a N-flowing tributary of the Middle Fork Lytle Creek, N of the headwaters area of the South Fork, Lytle Creek, W of Scotland. MRDS database stated accuracy for this location is 10 meters.
NOTE: USGS MRDS database file #10034037 presents geographic coordinates of 34.22864, -116.19834 for this locality. This is in obvious error. The T&R data presented in that same file is also in error, consistent with the coordinates error.
Mineralization is a replacement deposit hosted in granite and limestone. The ore body strike N20W and dip 70E at a thickness of 9.14 meters and a length of 304.8 meters. Limestone strikes northward and dips steeply eastward. It is a contact deposit in a 30 foot tactite zone of garnet-epidote rock. Local rocks include pre-Cenozoic metasedimentary and metavolcanic rocks undivided.
Workings include surface and underground openings comprised of open cuts and trenches and 1 adit at the S end.
Channel samples taken through widths of 5 to 6 feet have assayed at 3.2% to 13.1% Zn, from a trace to 3.6% Pb and 0.3 to 6.65 ounces Ag per ton.
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
4 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) Description: Occurs in tactite skarn. |
| ⓘ Galena Formula: PbS References: |
| ⓘ Galena var. Silver-bearing Galena Formula: PbS with Ag References: |
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 Description: Occurs in tactite skarn. |
| ⓘ Greenockite Formula: CdS Description: Occurs as coatings on sphalerite. |
| ⓘ Sphalerite Formula: ZnS References: |
| ⓘ Sphalerite var. Marmatite Formula: (Zn,Fe)S |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | var. Marmatite | 2.CB.05a | (Zn,Fe)S |
| ⓘ | Greenockite | 2.CB.45 | CdS |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | var. Silver-bearing Galena | 2.CD.10 | PbS with Ag |
| Group 9 - Silicates | |||
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Unclassified | |||
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | Oxygen | |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| Al | Aluminium | |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | Silicon | |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| S | Sulfur | |
| S | ⓘ Galena | PbS |
| S | ⓘ Greenockite | CdS |
| S | ⓘ Sphalerite | ZnS |
| S | ⓘ Sphalerite var. Marmatite | (Zn,Fe)S |
| S | ⓘ Galena var. Silver-bearing Galena | PbS with Ag |
| Ca | Calcium | |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | Iron | |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | ⓘ Sphalerite var. Marmatite | (Zn,Fe)S |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| Zn | ⓘ Sphalerite var. Marmatite | (Zn,Fe)S |
| Ag | Silver | |
| Ag | ⓘ Galena var. Silver-bearing Galena | PbS with Ag |
| Cd | Cadmium | |
| Cd | ⓘ Greenockite | CdS |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
| Pb | ⓘ Galena var. Silver-bearing Galena | PbS with Ag |
Other Databases
| Link to USGS MRDS: | 10034037 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Coast MountainsMountain Range
North America Plate
- Mojave DomainDomain
- Peninsular Ranges BatholithVolcanic Arc
Pacific PlateTectonic Plate
USA
- California
- San Gabriel MountainsMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060710246
