Diamond Mountain Mining District, California, USAi
| Regional Level Types | |
|---|---|
| Diamond Mountain Mining District | Mining District |
| California | State |
| USA | Country |
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Type:
Location and History: This district is in southern Lassen County about 5 miles south of Susanville. It is in the Diamond Mountain block, which lies at the extreme north end of the Sierra Nevada. Placer-mining began in the late 1850's, and several hundred thousand dollars in gold were soon recovered. Later some work was done by Chinese miners. Lode-mining began in the 1860's and continued sporadically through the early 1900's with some activity again in the 1930's. The output of the district is estimated at around $1 million (period values).
Geology: The district is underlain by quartz diorite and granite, which is overlain in places by Tertiary gravel and andesite. The quartz veins are as much as 15 feet thick and occur in shear zones chiefly in the quartz diorite. The ore contains free gold and varying amounts of pyrite. Milling ore usually was low to medium in grade, but some high-grade pockets were found. The ore shoots were not large and none of the mines has been developed to any great depth. Some aplitic and basic dikes are associated with veins. Opal also occurs in the veins.
Mines: Arkansas ($200,000+), Gold Belt (McDow) ($20,000), Honey Bee ($50,000+), Honey Lake, Harris- Mosgrove, Red Jacket (Gayman).
Geology: The district is underlain by quartz diorite and granite, which is overlain in places by Tertiary gravel and andesite. The quartz veins are as much as 15 feet thick and occur in shear zones chiefly in the quartz diorite. The ore contains free gold and varying amounts of pyrite. Milling ore usually was low to medium in grade, but some high-grade pockets were found. The ore shoots were not large and none of the mines has been developed to any great depth. Some aplitic and basic dikes are associated with veins. Opal also occurs in the veins.
Mines: Arkansas ($200,000+), Gold Belt (McDow) ($20,000), Honey Bee ($50,000+), Honey Lake, Harris- Mosgrove, Red Jacket (Gayman).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded from this region.Mineral List
Mineral list contains entries from the region specified including sub-localities6 valid minerals.
Rock Types Recorded
Rock list contains entries from the region specified including sub-localities
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ 'Feldspar Group' |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ 'Hornblende Root Name Group' Formula: ◻Ca2(C2+4C3+)(AlSi7O22)W2 |
| ⓘ 'Limonite' |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
| ⓘ Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 |
| ⓘ Native Gold Formula: Au Localities: Reported from at least 9 localities in this region. Description: Placer & lode [?] material. |
| ⓘ Orthoclase Formula: K(AlSi3O8) Colour: Pink. |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 Localities: Reported from at least 8 localities in this region. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | Orthoclase | 9.FA.30 | K(AlSi3O8) |
| Unclassified | |||
| ⓘ | 'Feldspar Group' | - | |
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Hornblende Root Name Group' | - | ◻Ca2(C2+4C3+)(AlSi7O22)W2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| O | Oxygen | |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Orthoclase | K(AlSi3O8) |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Hornblende Root Name Group | ◻Ca2(C42+C3+)(AlSi7O22)W2 |
| O | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Orthoclase | K(AlSi3O8) |
| Al | ⓘ Hornblende Root Name Group | ◻Ca2(C42+C3+)(AlSi7O22)W2 |
| Al | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Si | Silicon | |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Orthoclase | K(AlSi3O8) |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Hornblende Root Name Group | ◻Ca2(C42+C3+)(AlSi7O22)W2 |
| Si | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| K | Potassium | |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Orthoclase | K(AlSi3O8) |
| K | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Hornblende Root Name Group | ◻Ca2(C42+C3+)(AlSi7O22)W2 |
| Fe | Iron | |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Pyrite | FeS2 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Localities in this Region
- California
- Lassen County
- Diamond Mountain
- Arkansas claim
- Brown property
- Clark property
- Emerson Mine
- Emerson prospects
- Gayman-Spaulding claims (Red Jacket group)
- Gold Belt Mine (McDow Mine; Gold Belt-McDow Mine)
- Harris and Musgrove Mine (Dorothy Virginia claim; Blue Bell claim; Blue Bell No. 1 claim; Boyd vein)
- Honey Bee property
- Lantz property
- Lassen Lumber and Box Company property
- MacThomas property (Jiggs No. 1 claim)
- Diamond Mountain
- Lassen County
- California
- Lassen County
- Diamond Mountain
- Neff Brother's property
- Ridenour Mine (Ridenour Lone Pine; Lone Pine Mine)
- Satica property
- Unnamed Au occurrence [5]
- Unnamed placer Au occurrence [12]
- Unnamed placer Au occurrence [13]
- Unnamed placer Au occurrence [7]
- Unnamed placer Au occurrence [8]
- Unspecified Fe occurrence [2]
- Watson property
- Webster Fraction claim
- Janesville
- Diamond Mountain
- Lassen County
Other Regions, Features and Areas that Intersect
North AmericaContinent
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Columbia Basin and RangeWide Rift
- Shoofly-Olds Ferry DomainDomain
USA
- California
- Diamond MountainsMountain Range
- Sierra NevadaMountain Range
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References
Diamond Mountain Mining District, California, USA