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Angel Island, Marin County, California, USAi
Regional Level Types
Angel IslandIsland
Marin CountyCounty
CaliforniaState
USACountry

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PhotosMapsSearch
Type:
Island
Mindat Locality ID:
211445
Long-form identifier:
mindat:1:2:211445:6
GUID (UUID V4):
0
Other Languages:
View 8 more...
French:
Île Ángel, Comté de Marin, Californie, États-Unis
German:
Angel Island, Marin County, Kalifornien, Vereinigte Staaten
Russian:
Энджел , Марин, Калифорния, Соединённые Штаты Америки
Simplified Chinese:
天使島, 马林县, 加利福尼亚州, 美国
Spanish:
Isla Ángel, Condado de Marin, California, Estados Unidos
Cebuano:
Angel Island, Marin County, California
Central Bikol:
Pulo ng Anghel, California, Estados Unidos
Dutch:
Angel Island, Marin County, Verenigde Staten
Gan:
天使岛, 馬林縣, 加利福尼亞州, 美國
Japanese:
エンジェル島, マリン郡, カリフォルニア州, アメリカ合衆国
Polish:
Angel Island, Hrabstwo Marin, Kalifornia, Stany Zjednoczone
Tagalog:
Pulo ng Anghel, Marin County, California, Estados Unidos
Wu Chinese:
天使岛, 加利福尼亚, 美国


An island off the southern coast of Marin County in San Francisco Bay. The island is entirely within the state park; however, a thin sliver on its eastern end is in San Francisco County to the south. The island was home to a federal government immigration station (west coast equivalent of the much more famous Ellis Island, New York). It is the island about 2 miles N of Alcatraz Island where three possibly successful escapees from the federal prison on Alcatraz made it to land.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

3 valid minerals.

Detailed Mineral List:

ⓘ 'Crossite'
Description: Occurs as a constituent of metagraywackes.
ⓘ Glaucophane
Formula: ◻[Na2][Mg3Al2]Si8O22(OH)2
Habit: Needle-like
Colour: Blue
Description: Extremely fine crystals.
ⓘ Jadeite
Formula: Na(Al,Fe3+)Si2O6
Description: Occurs as a constituent of metagraywackes.
ⓘ Lawsonite
Formula: CaAl2(Si2O7)(OH)2 · H2O
Description: Occurs as a constituent of metagraywackes.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
ⓘLawsonite9.BE.05CaAl2(Si2O7)(OH)2 · H2O
ⓘJadeite9.DA.25Na(Al,Fe3+)Si2O6
ⓘGlaucophane9.DE.25◻[Na2][Mg3Al2]Si8O22(OH)2
Unclassified
ⓘ'Crossite'-

List of minerals for each chemical element

HHydrogen
Hⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Hⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
OOxygen
Oⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Oⓘ JadeiteNa(Al,Fe3+)Si2O6
Oⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
NaSodium
Naⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Naⓘ JadeiteNa(Al,Fe3+)Si2O6
MgMagnesium
Mgⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
AlAluminium
Alⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Alⓘ JadeiteNa(Al,Fe3+)Si2O6
Alⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
SiSilicon
Siⓘ Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Siⓘ JadeiteNa(Al,Fe3+)Si2O6
Siⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
CaCalcium
Caⓘ LawsoniteCaAl2(Si2O7)(OH)2 · H2O
FeIron
Feⓘ JadeiteNa(Al,Fe3+)Si2O6

Fossils

This region is too big or complex to display the fossil list, try looking at smaller subregions.

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Angel_Island_(California)
Wikidata ID:Q531734
GeoNames ID:5323982

Localities in this Region

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

Ransome, Frederick Leslie (1894) The geology of Angel Island, California. University of California, Department of Geol. Sci. Bulletin: 1: 193-234.p.206
Bloxam, T. W. (1960) Jadeite-rocks and glaucophane-schists from Angel Island, San Francisco Bay, California. American Journal of Science, 258 (8) 555-573 doi:10.2475/ajs.258.8.555pp.558-560
Coleman, R.G. (1965), Composition of jadeite pyroxene from the California graywackes: USGS PP 525-C: 25, 26-27.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 69
Coleman, R. G., Clark, J. R. (1968) Pyroxenes in the blueschist facies of California. American Journal of Science, 266 (1) 43-59 doi:10.2475/ajs.266.1.43P. 44
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
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