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Osceola Mudflow, Pierce County, Washington, USAi
Regional Level Types
Osceola Mudflow- not defined -
Pierce CountyCounty
WashingtonState
USACountry

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Mindat Locality ID:
301177
Long-form identifier:
mindat:1:2:301177:8
GUID (UUID V4):
0


A historical mudflow resulting from the collapse of the summit of Mt. Rainier 5600 years ago. The debris traveled up to 60 miles and covers an area of roughly 200 square miles.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


5 valid minerals.

Detailed Mineral List:

ⓘ Alunite
Formula: KAl3(SO4)2(OH)6
ⓘ Copiapite
Formula: Fe2+Fe3+4(SO4)6(OH)2 · 20H2O
ⓘ Gypsum
Formula: CaSO4 · 2H2O
ⓘ Jarosite
Formula: KFe3+3(SO4)2(OH)6
ⓘ Kaolinite
Formula: Al2(Si2O5)(OH)4
ⓘ 'Smectite Group'
Formula: A0.3D2-3[T4O10]Z2 · nH2O

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘAlunite7.BC.10KAl3(SO4)2(OH)6
ⓘJarosite7.BC.10KFe3+3(SO4)2(OH)6
ⓘGypsum7.CD.40CaSO4 · 2H2O
ⓘCopiapite7.DB.35Fe2+Fe3+4(SO4)6(OH)2 · 20H2O
Group 9 - Silicates
ⓘKaolinite9.ED.05Al2(Si2O5)(OH)4
Unclassified
ⓘ'Smectite Group'-A0.3D2-3[T4O10]Z2 · nH2O

List of minerals for each chemical element

HHydrogen
Hⓘ AluniteKAl3(SO4)2(OH)6
Hⓘ CopiapiteFe2+Fe43+(SO4)6(OH)2 · 20H2O
Hⓘ GypsumCaSO4 · 2H2O
Hⓘ JarositeKFe33+(SO4)2(OH)6
Hⓘ KaoliniteAl2(Si2O5)(OH)4
Hⓘ Smectite GroupA0.3D2-3[T4O10]Z2 · nH2O
OOxygen
Oⓘ AluniteKAl3(SO4)2(OH)6
Oⓘ CopiapiteFe2+Fe43+(SO4)6(OH)2 · 20H2O
Oⓘ GypsumCaSO4 · 2H2O
Oⓘ JarositeKFe33+(SO4)2(OH)6
Oⓘ KaoliniteAl2(Si2O5)(OH)4
Oⓘ Smectite GroupA0.3D2-3[T4O10]Z2 · nH2O
AlAluminium
Alⓘ AluniteKAl3(SO4)2(OH)6
Alⓘ KaoliniteAl2(Si2O5)(OH)4
SiSilicon
Siⓘ KaoliniteAl2(Si2O5)(OH)4
SSulfur
Sⓘ AluniteKAl3(SO4)2(OH)6
Sⓘ CopiapiteFe2+Fe43+(SO4)6(OH)2 · 20H2O
Sⓘ GypsumCaSO4 · 2H2O
Sⓘ JarositeKFe33+(SO4)2(OH)6
KPotassium
Kⓘ AluniteKAl3(SO4)2(OH)6
Kⓘ JarositeKFe33+(SO4)2(OH)6
CaCalcium
Caⓘ GypsumCaSO4 · 2H2O
FeIron
Feⓘ CopiapiteFe2+Fe43+(SO4)6(OH)2 · 20H2O
Feⓘ JarositeKFe33+(SO4)2(OH)6

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate

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References

Rye, R. O., Breit, G. N., & Zimbelman, D. R. (2003). Preliminary mineralogic and stable isotope studies of altered summit and flank rocks and Osceola Mudflow deposits on Mount Rainier, Washington. US Department of the Interior, US Geological Survey.
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