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Modoc County, California, USAi
Regional Level Types
Modoc CountyCounty
CaliforniaState
USACountry

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PhotosMapsSearchMineralogy
02596550017272058638471.jpg
Goose Lake Meteorite

Goose Lake meteorite, Goose Lake, Modoc County, California, USA
08900670017272058637965.jpg
Equipment

Topaz Mine, Yellow Mountain, High Grade Mining District, Warner Mountains, Modoc County, California, USA
05480710017272058649557.jpg
Pano of mine buildings

Topaz Mine, Yellow Mountain, High Grade Mining District, Warner Mountains, Modoc County, California, USA
02596550017272058638471.jpg
Goose Lake Meteorite

Goose Lake meteorite, Goose Lake, Modoc County, California, USA
08900670017272058637965.jpg
Equipment

Topaz Mine, Yellow Mountain, High Grade Mining District, Warner Mountains, Modoc County, California, USA
05480710017272058649557.jpg
Pano of mine buildings

Topaz Mine, Yellow Mountain, High Grade Mining District, Warner Mountains, Modoc County, California, USA
02366040017272058665702.jpg
Goose Lake Meteorite

Goose Lake meteorite, Goose Lake, Modoc County, California, USA
06787610017272058661648.jpg
Equipment

Topaz Mine, Yellow Mountain, High Grade Mining District, Warner Mountains, Modoc County, California, USA
Neighbouring regions:
Siskiyou County, California, USA
Washoe County, Nevada, USA
Shasta County, California, USA
Lake County, Oregon, USA
Lassen County, California, USA
Klamath County, Oregon, USA
Type:
County
Largest Settlements:
PlacePopulation
Alturas2,594 (2017)
California Pines520 (2011)
Cedarville514 (2011)
Newell449 (2011)
Canby315 (2011)
Adin272 (2011)
Mindat Locality ID:
28447
Long-form identifier:
mindat:1:2:28447:4
GUID (UUID V4):
0
Other Languages:
View 34 more...
French:
Comté de Modoc, Californie, États-Unis
German:
Modoc County, Kalifornien, Vereinigte Staaten
Italian:
Contea di Modoc, California, Stati Uniti d'America
Russian:
Модок, Калифорния, Соединённые Штаты Америки
Simplified Chinese:
莫多克县, 加利福尼亚州, 美国
Spanish:
Condado de Modoc, California, Estados Unidos
Albanian:
Modoc County, Kalifornia, Shtetet e Bashkuara të Amerikës
Arabic:
مقاطعة مودوك, كاليفورنيا, الولايات المتحدة
Armenian:
Մոդոկ շրջան, Կալիֆոռնիա, Ամերիկայի Միացյալ Նահանգներ
Basque:
Modoc konderria, Kalifornia
Bavarian:
Modoc County, Kalifornien, Vaoanigte Stootn
Bishnupriya Manipuri:
মোডোক কাউন্টি, ক্যালিফোর্নিয়া, তিলপারাষ্ট্র
Bulgarian:
Модок, Калифорния, Съединени американски щати
Cebuano:
Modoc County, California
Czech:
Modoc County, Kalifornie, Spojené státy americké
Danish:
Modoc County, Californien, USA
Dutch:
Modoc County, Verenigde Staten
Farsi/Persian:
شهرستان مودوک، کالیفرنیا, کالیفرنیا, ایالات متحده آمریکا
Finnish:
Modocin piirikunta, Kalifornia, Yhdysvallat
Hungarian:
Modoc megye, Kalifornia, Amerikai Egyesült Államok
Irish Gaelic:
Contae Modoc, California, Stáit Aontaithe Mheiriceá
Japanese:
モドック郡, カリフォルニア州, アメリカ合衆国
Kapampangan:
Modoc County, California, Estados Unidos
Latin:
Modoc Comitatus, California, Civitates Foederatae Americae
Limburgian:
Modoc County, Californië, Vereinegde Staote vaan Amerika
Low Saxon/Low German:
Modoc County, Kalifornien, USA
Malayalam:
മൊഡോക് കൌണ്ടി, കാലിഫോർണിയ
Norwegian:
Modoc County, California, USA
Polish:
Hrabstwo Modoc, Kalifornia, Stany Zjednoczone
Portuguese:
Condado de Modoc, Califórnia, Estados Unidos
Serbian:
Округ Модок, Калифорнија, Сједињене Америчке Државе
Serbo-Croatian:
Modoc County, Kalifornija, Sjedinjene Američke Države
Swedish:
Modoc County, Kalifornien, USA
Tagalog:
Modoc County, California, Estados Unidos
Turkish:
Modoc İlçesi, Kaliforniya, Amerika Birleşik Devletleri
Ukrainian:
Модок, Каліфорнія, Сполучені Штати Америки
Urdu:
موڈوک کاؤنٹی، کیلیفورنیا, کیلیفورنیا, ریاستہائے متحدہ امریکا
Vietnamese:
Quận Modoc, California, Chủng Quốc Hoa Kỳ
Waray:
Condado han Modoc, California, Estados Unidos
Western Punjabi:
موڈوک کاؤنٹی, کیلیفورنیا, امریکہ


The northeastern-most county in California with a total area of 4,203.37 square miles, but with a population under 10,000. Significant regions of this sparsely populated county include the Modoc Plateau, Great Basin, Cascade Range and Warner Mountains.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity 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-localities

31 valid minerals.

Rock Types Recorded


Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ Anorthite
Formula: Ca(Al2Si2O8)
Description: Occurs with inclusions of Copper (Aventurine).
ⓘ Anorthite var. Labradorite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Description: Occurs with inclusions of Copper (Aventurine).
ⓘ Azurite
Formula: Cu3(CO3)2(OH)2
ⓘ Calcite
Formula: CaCO3
Description: Occurs as optical quality in masses to 60 or 80 pounds in veins in basalt.
ⓘ Calcite var. Iceland Spar
Formula: CaCO3
Description: Occurs as optical quality in masses to 60 or 80 pounds in veins in basalt.
ⓘ Carlsbergite
Formula: CrN
ⓘ 'Chabazite'
ⓘ Chalcopyrite
Formula: CuFeS2
Description: Occurs in gold-quartz veins.
ⓘ Cinnabar
Formula: HgS
ⓘ Cohenite
Formula: Fe3C
Description: Occurs swathing Schreibersite. Often as branched crystals within the kamacite lamellae.
ⓘ 'Copper Stain'
ⓘ Cuprite
Formula: Cu2O
ⓘ Daubréelite
Formula: Fe2+Cr3+2S4
ⓘ Graphite
Formula: C
Description: Occurs in minor amounts, normally in kamacite and may take on a cliftonite morphology.
ⓘ Haxonite
Formula: NiFe22C6
ⓘ Hematite
Formula: Fe2O3
ⓘ 'Heulandite Subgroup'
Formula: (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
ⓘ 'Hornblende Root Name Group'
Formula: ◻Ca2(C2+4C3+)(AlSi7O22)W2
ⓘ Ice
Formula: H2O
Description: Permanent Ice in lava tunnels (tubes).
ⓘ 'Limonite'
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
ⓘ Metacinnabar
Formula: HgS
Description: Sooty coatings on sediments, rocks, Indian artifacts, bones and irrigation pipes in pool outflows.
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Native Copper
Formula: Cu
ⓘ Native Gold
Formula: Au
Localities: Reported from at least 55 localities in this region.
Description: Placer material.
ⓘ Native Iron
Formula: Fe
ⓘ Native Iron var. Kamacite
Formula: (Fe,Ni)
ⓘ Native Silver
Formula: Ag
ⓘ Natrolite
Formula: Na2Al2Si3O10 · 2H2O
Habit: Acicular
Description: Occurs as slender needles with Stilbite in lava.
ⓘ Niter
Formula: KNO3
Description: Occurs as incrustations.
ⓘ Nontronite
Formula: Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
ⓘ 'Opalite'
ⓘ 'Phillipsite Subgroup'
Formula: (Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
ⓘ 'Plessite'
ⓘ Pyrite
Formula: FeS2
Localities:
Silvertown group, Squaw Peak, Warner Mountains, Modoc County, California, USA
Discovery claim (Hardtack claim; Archerton claim; Oregon claim; Gold Wedge claim; California claim; Nine-Thirty claim), Yellow Mountain, High Grade Mining District (Hoag Mining District), Warner Mountains, Modoc County, California, USA
Gold Shore lode (Moonlight group; Moonlight Mines; Moonlight claim; Paradise claim; Sunbeam claim; Daisey claim; Inner Fraction claim; New Year claim), Yellow Mountain, High Grade Mining District (Hoag Mining District), Warner Mountains, Modoc County, California, USA
Klondike group (Alturus claim; Klondike claim; Alturus Fraction claim; Evening Star claim; Alturus No. 1 claim; White Quartz claim; Mountain Sheep No. 2 claim), Yellow Mountain, High Grade Mining District (Hoag Mining District), Warner Mountains, Modoc County, California, USA
ⓘ Quartz
Formula: SiO2
Localities: Reported from at least 57 localities in this region.
ⓘ Quartz var. Agate
Formula: SiO2
Description: Abundant and varied.
ⓘ Quartz var. Amethyst
Formula: SiO2
ⓘ Quartz var. Chalcedony
Formula: SiO2
Description: Abundant and varied.
ⓘ Schreibersite
Formula: (Fe,Ni)3P
Description: Occurs swathed in Cohenite.
ⓘ 'Stilbite Subgroup'
Formula: M6-7[Al8-9Si27-28O72] · nH2O
ⓘ Taenite
Formula: (Ni,Fe)
ⓘ Talc
Formula: Mg3Si4O10(OH)2
ⓘ 'Tourmaline'
Formula: AD3G6(T6O18)(BO3)3X3Z
Colour: Black
Description: Occurs as crystals in quartz.
ⓘ Troilite
Formula: FeS
Description: Troilite is present as small nodules, normally associated with graphite and/or silicates.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Copper1.AA.05Cu
ⓘNative Gold1.AA.05Au
ⓘNative Silver1.AA.05Ag
ⓘNative Iron1.AE.05Fe
ⓘvar. Kamacite1.AE.05(Fe,Ni)
ⓘTaenite1.AE.10(Ni,Fe)
ⓘCohenite1.BA.05Fe3C
ⓘHaxonite1.BA.10NiFe22C6
ⓘCarlsbergite1.BC.15CrN
ⓘSchreibersite1.BD.05(Fe,Ni)3P
ⓘGraphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
ⓘMetacinnabar2.CB.05aHgS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘTroilite2.CC.10FeS
ⓘCinnabar2.CD.15aHgS
ⓘDaubréelite2.DA.05Fe2+Cr3+2S4
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘIce4.AA.05H2O
ⓘCuprite4.AA.10Cu2O
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘHematite4.CB.05Fe2O3
ⓘQuartz
var. Agate		4.DA.05SiO2
ⓘvar. Amethyst4.DA.05SiO2
ⓘvar. Chalcedony4.DA.05SiO2
ⓘ4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘvar. Iceland Spar5.AB.05CaCO3
ⓘAzurite5.BA.05Cu3(CO3)2(OH)2
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
ⓘNiter5.NA.10KNO3
Group 9 - Silicates
ⓘTalc9.EC.05Mg3Si4O10(OH)2
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘNontronite9.EC.40Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘAnorthite9.FA.35Ca(Al2Si2O8)
ⓘvar. Labradorite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
ⓘNatrolite9.GA.05Na2Al2Si3O10 · 2H2O
Unclassified
ⓘ'Chabazite'-
ⓘ'Heulandite Subgroup'-(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
ⓘ'Limonite'-
ⓘ'Phillipsite Subgroup'-(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
ⓘ'Stilbite Subgroup'-M6-7[Al8-9Si27-28O72] · nH2O
ⓘ'Tourmaline'-AD3G6(T6O18)(BO3)3X3Z
ⓘ'Opalite'-
ⓘ'Hornblende Root Name Group'-◻Ca2(C2+4C3+)(AlSi7O22)W2
ⓘ'Plessite'-
ⓘ'Copper Stain'-

List of minerals for each chemical element

HHydrogen
Hⓘ AzuriteCu3(CO3)2(OH)2
Hⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Hⓘ IceH2O
Hⓘ MalachiteCu2(CO3)(OH)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Hⓘ NatroliteNa2Al2Si3O10 · 2H2O
Hⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
Hⓘ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Hⓘ TalcMg3Si4O10(OH)2
Hⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
BBoron
Bⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
CCarbon
Cⓘ AzuriteCu3(CO3)2(OH)2
Cⓘ CalciteCaCO3
Cⓘ CoheniteFe3C
Cⓘ GraphiteC
Cⓘ HaxoniteNiFe22C6
Cⓘ MalachiteCu2(CO3)(OH)2
Cⓘ Calcite var. Iceland SparCaCO3
NNitrogen
Nⓘ CarlsbergiteCrN
Nⓘ NiterKNO3
OOxygen
Oⓘ Quartz var. AgateSiO2
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ Quartz var. AmethystSiO2
Oⓘ AnorthiteCa(Al2Si2O8)
Oⓘ AzuriteCu3(CO3)2(OH)2
Oⓘ CalciteCaCO3
Oⓘ Quartz var. ChalcedonySiO2
Oⓘ CupriteCu2O
Oⓘ HematiteFe2O3
Oⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Oⓘ IceH2O
Oⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ NiterKNO3
Oⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Oⓘ NatroliteNa2Al2Si3O10 · 2H2O
Oⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
Oⓘ QuartzSiO2
Oⓘ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Oⓘ TalcMg3Si4O10(OH)2
Oⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
Oⓘ Calcite var. Iceland SparCaCO3
Oⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Oⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Naⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Naⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Naⓘ NatroliteNa2Al2Si3O10 · 2H2O
Naⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
MgMagnesium
Mgⓘ TalcMg3Si4O10(OH)2
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ AnorthiteCa(Al2Si2O8)
Alⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Alⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Alⓘ NatroliteNa2Al2Si3O10 · 2H2O
Alⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
Alⓘ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Alⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Alⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ Quartz var. AgateSiO2
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ Quartz var. AmethystSiO2
Siⓘ AnorthiteCa(Al2Si2O8)
Siⓘ Quartz var. ChalcedonySiO2
Siⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Siⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Siⓘ NatroliteNa2Al2Si3O10 · 2H2O
Siⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
Siⓘ QuartzSiO2
Siⓘ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Siⓘ TalcMg3Si4O10(OH)2
Siⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Siⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
PPhosphorus
Pⓘ Schreibersite(Fe,Ni)3P
SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ CinnabarHgS
Sⓘ DaubréeliteFe2+Cr23+S4
Sⓘ MetacinnabarHgS
Sⓘ PyriteFeS2
Sⓘ TroiliteFeS
KPotassium
Kⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ NiterKNO3
Kⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
Kⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ AnorthiteCa(Al2Si2O8)
Caⓘ CalciteCaCO3
Caⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Caⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Caⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
Caⓘ Calcite var. Iceland SparCaCO3
Caⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
CrChromium
Crⓘ CarlsbergiteCrN
Crⓘ DaubréeliteFe2+Cr23+S4
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ CoheniteFe3C
Feⓘ DaubréeliteFe2+Cr23+S4
Feⓘ HaxoniteNiFe22C6
Feⓘ HematiteFe2O3
Feⓘ Native IronFe
Feⓘ Native Iron var. Kamacite(Fe,Ni)
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Feⓘ PyriteFeS2
Feⓘ Schreibersite(Fe,Ni)3P
Feⓘ Taenite(Ni,Fe)
Feⓘ TroiliteFeS
NiNickel
Niⓘ HaxoniteNiFe22C6
Niⓘ Native Iron var. Kamacite(Fe,Ni)
Niⓘ Schreibersite(Fe,Ni)3P
Niⓘ Taenite(Ni,Fe)
CuCopper
Cuⓘ AzuriteCu3(CO3)2(OH)2
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ CupriteCu2O
Cuⓘ Native CopperCu
Cuⓘ MalachiteCu2(CO3)(OH)2
AgSilver
Agⓘ Native SilverAg
BaBarium
Baⓘ Phillipsite Subgroup(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
AuGold
Auⓘ Native GoldAu
HgMercury
Hgⓘ CinnabarHgS
Hgⓘ MetacinnabarHgS

Fossils

There are 1 fossil locality from the PaleoBioDB database within this region.

These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.

Occurrences1
Youngest Fossil Listed30.8 Ma (Oligocene)
Oldest Fossil Listed33.3 Ma (Oligocene)
Stratigraphic Units
UnitNo. OccurrencesAge
Steamboat - Cougar Cliff133.3 - 30.8 Ma (Oligocene)
Fossils from RegionClick here to show the list.
Accepted NameHierarchy Age
Rhinocerotidae
family		Animalia : Chordata : Mammalia : Perissodactyla : Rhinocerotidae33.3 - 30.8 Ma
Oligocene
Fossil LocalitiesClick to show 1 fossil locality

Other Databases

Wikidata ID:Q109695

Localities in this Region

USA
USA

Other Regions, Features and Areas that Intersect

North AmericaContinent
North America PlateTectonic Plate
USA

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.

References

Stines, Norman S. (1910), Hoag district, Modoc County, California: Mining and Scientific Press: 100: 384-386.
Stines, Norman S. (1912), The camp of High Grade in northern California; historical facts and a description of the geology of the Hoag district in Modoc County: Mining Science: 65: 27-29.
Storms, William H. (1912), The High Grade mining district (Modoc County, California): Mining and Scientific Press: 105: 273-275.
Andersen, Olaf (1917), Aventurine laboradorite from California: American Mineralogist: 2: 91
Tucker, W. Burling (1919), El Dorado, Lassen, Modoc, Tehama, and Tulare Counties: California Journal of Mines and Geology, California Mining Bureau. (Report 15): 226-253, 258-266, 271-308, 900-954.
Averill, Charles V. (1929), Redding field division, Lassen and Modoc, Napa, Lake, Glenn, Mendocino Counties: California Journal of Mines and Geology, California Division Mines (Report 25): 25(4): 2-19, 213-242, 337-365, 418-426, 456-467.
Powers, Howard Adorno (1932), The lavas of the Modoc Lava Bed quadrangle, California: American Mineralogist: 17: 253-294.
Averill, Charles V. (1936), Mineral resources of Modoc County: California Journal of Mines and Geology, California Division Mines (Report 32): 32: 445-457.
Linsley, Earle Garfield (1939), The giant Goose Lake meteorite from Modoc County, California: California Division Mines Report 35: 308-312.
O’Brien, J.C. (1948), Modoc County: California Journal of Mines and Geology (Report 44): 44(4): 349.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 183, 277, 352.
Gay, T.E. (1966) Economic mineral deposits of the Cascade Range, Modoc Plateau, and Great Basin Region of northeastern California. In: Geology of Northern California, California Division Mines and Geology Bulletin 190: 97-104.
Clark, W.B. (1970) Gold Districts of California. Bulletin 193. California Division of Mines & Geologyp.177
Miller, M. S. (1988), Mineral Resources of the South Warner Contiguous Wilderness Study area: U.S. Bureau of Mines Mineral Land Assessment Open-File Report.
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