Fort Cady deposit (Fort Cady Solution Mine; Fort Cady project), Hector, San Bernardino County, California, USAi
| Regional Level Types | |
|---|---|
| Fort Cady deposit (Fort Cady Solution Mine; Fort Cady project) | Deposit |
| Hector | Hamlet |
| San Bernardino County | County |
| California | State |
| USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
34° 46' North , 116° 25' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Fort Irwin | 8,845 (2011) | 60.3km |
| Baker | 735 (2011) | 63.5km |
A B(borate)-Na(halite)-Sr-Gypsum deposit/prospect/mine located in the NW¼NE¼SE¼ sec. 25, T8N, R5E, SBM, 5.3 km (3.3 miles) SE of Hector and 10.4 km (6.5 miles) WNW of Lavic, on land of mixed ownership (federal and private leases) (located claim - federal portion). Discovered in 1964 by Congdon & Carrey. Owned & operated by the Fort Cady Minerals Corp., California (1991). MRDS database stated accuracy for this location is 100 meters.
Plans were to solution mine the deposit. This is the largest known colemanite deposit in the US. In the early 1980's, Duval developed, tested and patented a unique, in-situ solution mining and solar evaporation process for colemanite where it is converted into boric acid and calcium chloride while still underground.
In 1990 (May) Corona was in the process of transferring ownership of Fort Cady Minerals to Avalon Corporation, an New York Stock Exchange-listed oil and gas company. As of May, 1990, 35% of detailed construction engineering work was completed and mining and reclamation plans were about to be submitted for permitting. Previous owners include Moiuntain States Mineral Enterprises, Tucson, Arizona (purchased the property in 1986), and Duval Corp. (early 1980's). Project management was awarded to Kilbourne International. Construction of an 82,000 tons/year plant was scheduled for 1990.
Mineralization is hosted in lake sediments & Miocene evaporites. The ore body is 36 meters thick with a depth-to-top of 410 meters. The colemanite occurs as fine-grained crystals in beds, bands, and disseminations within the anhydrite-rich part of the evaporite section. The deposit averages 118 feet thick at an average depth of 1,350 feet. The deposit covers an area of 384 acres. Local rocks include Recent (Holocene) volcanic flow units, unit 4 (Mojave Desert) and/or Quaternary alluvium and marine deposits.
Plant on site is a leach process operation.
Reserve-Resource data are found in: Sprague, 1990; O'Driscoll, 1990; Industrial Minerals, 1989; and, Norman, 1991.
Reserves and resources: Type: In-situ (estimate year: 1989); Total resources: 133,700,000,000 metric tons of ore. B2O3 at 6.4 weight percent (1989).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
6 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:
| ⓘ Anhydrite Formula: CaSO4 |
| ⓘ Celestine Formula: SrSO4 |
| ⓘ Colemanite Formula: Ca[B3O4(OH)3] · H2O |
| ⓘ Gypsum Formula: CaSO4 · 2H2O |
| ⓘ Halite Formula: NaCl |
| ⓘ Trona Formula: Na3H(CO3)2 · 2H2O |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 3 - Halides | |||
|---|---|---|---|
| ⓘ | Halite | 3.AA.20 | NaCl |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Trona | 5.CB.15 | Na3H(CO3)2 · 2H2O |
| Group 6 - Borates | |||
| ⓘ | Colemanite | 6.CB.10 | Ca[B3O4(OH)3] · H2O |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Anhydrite | 7.AD.30 | CaSO4 |
| ⓘ | Celestine | 7.AD.35 | SrSO4 |
| ⓘ | Gypsum | 7.CD.40 | CaSO4 · 2H2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Colemanite | Ca[B3O4(OH)3] · H2O |
| H | ⓘ Gypsum | CaSO4 · 2H2O |
| H | ⓘ Trona | Na3H(CO3)2 · 2H2O |
| B | Boron | |
| B | ⓘ Colemanite | Ca[B3O4(OH)3] · H2O |
| C | Carbon | |
| C | ⓘ Trona | Na3H(CO3)2 · 2H2O |
| O | Oxygen | |
| O | ⓘ Anhydrite | CaSO4 |
| O | ⓘ Celestine | SrSO4 |
| O | ⓘ Colemanite | Ca[B3O4(OH)3] · H2O |
| O | ⓘ Gypsum | CaSO4 · 2H2O |
| O | ⓘ Trona | Na3H(CO3)2 · 2H2O |
| Na | Sodium | |
| Na | ⓘ Halite | NaCl |
| Na | ⓘ Trona | Na3H(CO3)2 · 2H2O |
| S | Sulfur | |
| S | ⓘ Anhydrite | CaSO4 |
| S | ⓘ Celestine | SrSO4 |
| S | ⓘ Gypsum | CaSO4 · 2H2O |
| Cl | Chlorine | |
| Cl | ⓘ Halite | NaCl |
| Ca | Calcium | |
| Ca | ⓘ Anhydrite | CaSO4 |
| Ca | ⓘ Colemanite | Ca[B3O4(OH)3] · H2O |
| Ca | ⓘ Gypsum | CaSO4 · 2H2O |
| Sr | Strontium | |
| Sr | ⓘ Celestine | SrSO4 |
Other Databases
| Link to USGS MRDS: | 10023265 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mojave DomainDomain
- Southern Basin and RangeWide Rift
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
