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Bald Hornet Prospect, Snoqualmie Mining District, King County, Washington, USAi
Regional Level Types
Bald Hornet ProspectProspect
Snoqualmie Mining DistrictMining District
King CountyCounty (Historical)
WashingtonState
USACountry

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Latitude & Longitude (WGS84):
47° 30' 44'' North , 121° 42' 16'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Tanner1,018 (2011)5.2km
Riverbend2,132 (2011)6.1km
North Bend6,679 (2017)6.4km
Wilderness Rim1,523 (2017)8.7km
Snoqualmie13,169 (2017)9.2km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Bellevue Rock Club, Inc.Bellevue, Washington39km
East KingCo Rock ClubKirkland, Washington42km
Cascade Mineralogical Society IncKent, Washington42km
North American Miners AssociationKent, Washington42km
North Seattle Lapidary & Mineral ClubSeattle, Washington48km
Mindat Locality ID:
8535
Long-form identifier:
mindat:1:2:8535:2
GUID (UUID V4):
0
Other/historical names associated with this locality:
Crystal Palace Claim; Bald Hornet Claim


A prospect along the ridge between Mt. Teneriffe and Mt. Si. It was developed by several short cuts and was covered by both the Bald Hornet and Crystal Palace claims. The deposits occur in highly sericitized Miocene granodiorite breccias. These were among the earliest patented mining claims located in King County. In the 1970's they were owned by the late Henry J. Wrightsman. Later they were bought by Storm Stevenson who built a cabin on one of the claims. The claims were later sold to the State of Washington and became part of the Mount Si Natural Resource Conservation Area.


Note: There is some confusion about the naming of this locality. The breccia zone that produces crystals outcrops on both the historic Bald Hornet and Crystal Palace claims. The vast majority if not all of the crystals produced from it came from the Crystal Palace claim. A mistake in locating the claims on the map by early collectors however has since led to many pieces being sold as from the Bald Hornet Claim. Technically these specimens should be attributed to the Crystal Palace claim, but as the claims are on the same deposit and adjoin each other, they are referred together as the Bald Hornet Claim/Prospect.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


9 valid minerals. 1 (FRL) - first recorded locality of unapproved mineral/variety/etc. 1 erroneous literature entry.

Detailed Mineral List:

Dravite ?
Formula: NaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Habit: fiberous, sprays
Colour: greenish gray to black
Description: Probably all IMA2009-046; however could also be possible.
Ferberite
Formula: FeWO4
Goethite
Formula: Fe3+O(OH)
'Limonite'
'Luinaite-(OH)'
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Description: Luainaite-(OH) was descreditedin 2022 (Bosi et al. 2022). A triclinic sample of luinaite-(OH) from Bald Hornet prospect (Blue Mountain Saddle) was reexamined and found to be the triclinic dimorph of oxy-dravite, and thus, it can be referred to as oxy-dravite-1A.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
Oxy-dravite
Formula: Na(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O
Oxy-dravite var. Oxy-dravite-1A (FRL)
Formula: Na(Mg2Al)Al6(Si6O18)(BO3)3(OH)3O
Type Locality:
Pyrite
Formula: FeS2
Habit: cubes
Description: occasionaly as inclusions outlining phantoms in the quartz
Quartz
Formula: SiO2
Habit: tabular, twinned
Colour: colorless
Description: Japanlaw twins are very common at this site and reach up to 8cm in length.
Quartz var. Rock Crystal
Formula: SiO2
Quartz var. Sceptre Quartz
Formula: SiO2
Stibiconite
Formula: Sb3+Sb5+2O6(OH)
Stibnite
Formula: Sb2S3
'Tourmaline'
Formula: AD3G6(T6O18)(BO3)3X3Z

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Stibnite2.DB.05Sb2S3
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Goethite4.00.Fe3+O(OH)
Quartz4.DA.05SiO2
var. Rock Crystal4.DA.05SiO2
var. Sceptre Quartz4.DA.05SiO2
Ferberite4.DB.30FeWO4
Stibiconite4.DH.20Sb3+Sb5+2O6(OH)
Group 9 - Silicates
Dravite ?9.CK.05NaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Oxy-dravite9.CK.05Na(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O
'Luinaite-(OH)' ?9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Oxy-dravite
var. Oxy-dravite-1A (TL)
9.CK.05Na(Mg2Al)Al6(Si6O18)(BO3)3(OH)3O
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
'Limonite'-
'Tourmaline'-AD3G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
H GoethiteFe3+O(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H StibiconiteSb3+Sb25+O6(OH)
H Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
H Oxy-draviteNa(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O
H Luinaite-(OH)NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
H Oxy-dravite var. Oxy-dravite-1ANa(Mg2Al)Al6(Si6O18)(BO3)3(OH)3O
BBoron
B DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
B TourmalineAD3G6(T6O18)(BO3)3X3Z
B Oxy-draviteNa(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O
B Luinaite-(OH)NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
B Oxy-dravite var. Oxy-dravite-1ANa(Mg2Al)Al6(Si6O18)(BO3)3(OH)3O
OOxygen
O DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
O FerberiteFeWO4
O GoethiteFe3+O(OH)
O MuscoviteKAl2(AlSi3O10)(OH)2
O QuartzSiO2
O StibiconiteSb3+Sb25+O6(OH)
O TourmalineAD3G6(T6O18)(BO3)3X3Z
O Quartz var. Rock CrystalSiO2
O Quartz var. Sceptre QuartzSiO2
O Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
O Oxy-draviteNa(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O
O Luinaite-(OH)NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
O Oxy-dravite var. Oxy-dravite-1ANa(Mg2Al)Al6(Si6O18)(BO3)3(OH)3O
NaSodium
Na DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Na Oxy-draviteNa(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O
Na Luinaite-(OH)NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Na Oxy-dravite var. Oxy-dravite-1ANa(Mg2Al)Al6(Si6O18)(BO3)3(OH)3O
MgMagnesium
Mg DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Mg Oxy-draviteNa(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O
Mg Oxy-dravite var. Oxy-dravite-1ANa(Mg2Al)Al6(Si6O18)(BO3)3(OH)3O
AlAluminium
Al DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Al Oxy-draviteNa(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O
Al Luinaite-(OH)NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Al Oxy-dravite var. Oxy-dravite-1ANa(Mg2Al)Al6(Si6O18)(BO3)3(OH)3O
SiSilicon
Si DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si Quartz var. Rock CrystalSiO2
Si Quartz var. Sceptre QuartzSiO2
Si Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Si Oxy-draviteNa(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O
Si Luinaite-(OH)NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Si Oxy-dravite var. Oxy-dravite-1ANa(Mg2Al)Al6(Si6O18)(BO3)3(OH)3O
SSulfur
S PyriteFeS2
S StibniteSb2S3
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
K Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
FeIron
Fe FerberiteFeWO4
Fe GoethiteFe3+O(OH)
Fe PyriteFeS2
Fe Luinaite-(OH)NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
SbAntimony
Sb StibiconiteSb3+Sb25+O6(OH)
Sb StibniteSb2S3
WTungsten
W FerberiteFeWO4

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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