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Bald Hornet claim (Blue Mountain Saddle), North Bend, King Co., Washington, USA

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Location is approximate, estimate based on other nearby localities.
Latitude & Longitude (WGS84): 47° North , 121° West (est.)
Margin of Error:~6km
Locality type:Claim
Köppen climate type:Csb : Warm-summer Mediterranean climate

Specimen claim located 3 miles North of North Bend. It worked a breccia body in volcanic rock. The locality is most commonly and correctly known as the Bald Hornet claim.

This locality is most definitely NOT the Blue Mountain Saddle tourmaline deposit, though the Blue Mountain Saddle deposit does host bundles of acicular tourmaline which show an x-ray spectrum similar to, but with slightly more iron than the Bald Hornet material.

The deposits occur in highly sericitized Miocene granodiorite breccias.

In my opinion, the West boundary of the Bald Hornet Japan law quartz twin and luinaite locality lies just to the West of the West boundary of the Bald Hornet #1 claim.

In addition to the Bald Hornet and Blue Mountain Saddle localities, several other tourmaline localities exist in the nearly immediate area. The most important of which is the Crystal Palace deposit which was staked and recorded in the King County Mining Index in the early 1890's, and described as adjoining, though not contiguous to the trend of the Bald Hornet group.

The Bald Hornet claims 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. Recently the claims were sold to the State of Washington and became part of the Mount Si Natural Resource Conservation Area.

Collecting of mineral specimens is restricted under the regulations in the NCRA.

Bart Cannon

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

8 valid minerals.

Detailed Mineral List:

Dravite ?
Formula: Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Habit: fiberous, sprays
Colour: greenish gray to black
Description: Probably all IMA2009-046; however could also be possible.
Reference: Rocks and Minerals 66:6, p.469
Formula: FeWO4
Reference: Jaimy Henman specimen and SEM/EDS analysis
Formula: α-Fe3+O(OH)
Reference: Rocks and Minerals 66:6, p.469
Formula: (Fe,O,OH,H2O)
Reference: Rocks and Minerals 66:6, p.469
Formula: Na(Fe2+)3Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: IMA approvals - Sept. 2009
Formula: KAl2(AlSi3O10)(OH)2
Reference: Rocks and Minerals 66:6, p.469
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Rocks and Minerals 66:6, p.469
Formula: FeS2
Habit: cubes
Description: occasionaly as inclusions outlining phantoms in the quartz
Reference: Minerals of Washington, B. Cannon, 1975; Rocks and Minerals 66:6, p.469
Formula: SiO2
Habit: tabular, twinned
Colour: colorless
Description: Japanlaw twins are very common at this site and reach up to 8cm in length.
Reference: Min Record:20(5):390; Minerals of Washington, B. Cannon, 1975; Rocks and Minerals 66:6, p.469
Quartz var: Rock Crystal
Formula: SiO2
Reference: Minerals of Washington, Bart Cannon, 1975
Quartz var: Sceptre Quartz
Formula: SiO2
Reference: Minerals of Washington, Bart Cannon, 1975
Formula: Sb3+Sb5+2O6(OH)
Reference: Rocks and Minerals 66:6, p.469
Formula: Sb2S3
Reference: Rocks and Minerals 66:6, p.469
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Min Record:20(5):390, Minerals of Washington, B. Cannon, 1975

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Group 4 - Oxides and Hydroxides
var: Rock Crystal4.DA.05SiO2
var: Sceptre Quartz4.DA.05SiO2
Group 9 - Silicates
'Dravite' ?9.CK.05Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:3
AmBnXp, with (m+n):p = 1:2
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with borate groups
Dravite ?
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Unclassified Minerals, Rocks, etc.
var: Sericite
var: Rock Crystal
var: Sceptre Quartz-SiO2

List of minerals for each chemical element

H DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
H Goethiteα-Fe3+O(OH)
H Limonite(Fe,O,OH,H2O)
H Luinaite-(OH)Na(Fe2+)3Al6(Si6O18)(BO3)3(OH)3(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H StibiconiteSb3+Sb25+O6(OH)
B DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
B Luinaite-(OH)Na(Fe2+)3Al6(Si6O18)(BO3)3(OH)3(OH)
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
O FerberiteFeWO4
O Goethiteα-Fe3+O(OH)
O Limonite(Fe,O,OH,H2O)
O Luinaite-(OH)Na(Fe2+)3Al6(Si6O18)(BO3)3(OH)3(OH)
O MuscoviteKAl2(AlSi3O10)(OH)2
O QuartzSiO2
O Quartz (var: Rock Crystal)SiO2
O Quartz (var: Sceptre Quartz)SiO2
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O StibiconiteSb3+Sb25+O6(OH)
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
Na DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Na Luinaite-(OH)Na(Fe2+)3Al6(Si6O18)(BO3)3(OH)3(OH)
Mg DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Al DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Al Luinaite-(OH)Na(Fe2+)3Al6(Si6O18)(BO3)3(OH)3(OH)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Si Luinaite-(OH)Na(Fe2+)3Al6(Si6O18)(BO3)3(OH)3(OH)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si Quartz (var: Rock Crystal)SiO2
Si Quartz (var: Sceptre Quartz)SiO2
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
S PyriteFeS2
S StibniteSb2S3
K MuscoviteKAl2(AlSi3O10)(OH)2
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Fe FerberiteFeWO4
Fe Goethiteα-Fe3+O(OH)
Fe Limonite(Fe,O,OH,H2O)
Fe Luinaite-(OH)Na(Fe2+)3Al6(Si6O18)(BO3)3(OH)3(OH)
Fe PyriteFeS2
Sb StibiconiteSb3+Sb25+O6(OH)
Sb StibniteSb2S3
W FerberiteFeWO4


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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Cannon, B. (1975), Minerals Of Washington.
Mineralogical Record (1989): 20(5): 390.
Rocks & Minerals (1991): 66(6): 468-469.

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