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Mt. Foster, Bennett, Atlin Mining Division, British Columbia, Canadai
Regional Level Types
Mt. FosterMountain
Bennett- not defined -
Atlin Mining DivisionDivision
British ColumbiaProvince

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Lock Map
Latitude & Longitude (WGS84): 59° 51' North , 134° 59' West
Latitude & Longitude (decimal): 59.85000,-134.98333
GeoHash:G#: c48h2rk5s
Locality type:Mountain
Köppen climate type:ET : Tundra
Nearest Settlements:
Carcross446 (2008)38.4km
Skagway920 (2015)47.3km

Miarolitic cavities.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

6 valid minerals.

Detailed Mineral List:

Formula: Be3Al2(Si6O18)
Reference: Can.Rockhound v.3, no.1
Beryl var: Aquamarine
Formula: Be3Al2Si6O18
Reference: Can.Rockhound v.3, no.1
Formula: CaF2
Reference: Can.Rockhound v.3, no.1
Formula: K(AlSi3O8)
Reference: Can.Rockhound v.3, no.1
Formula: Be2SiO4
Reference: Can.Rockhound v.3, no.1
Formula: SiO2
Reference: Can.Rockhound v.3, no.1
Quartz var: Smoky Quartz
Formula: SiO2
Reference: Can.Rockhound v.3, no.1
Formula: Al2(SiO4)(F,OH)2
Reference: Can.Rockhound v.3, no.1

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
Group 4 - Oxides and Hydroxides
var: Smoky Quartz4.DA.05SiO2
Group 9 - Silicates
var: Aquamarine9.CJ.05Be3Al2Si6O18

List of minerals arranged by Dana 8th Edition classification

Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [4] coordination
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Unclassified Minerals, Mixtures, etc.
var: Aquamarine
var: Smoky Quartz

List of minerals for each chemical element

H TopazAl2(SiO4)(F,OH)2
Be PhenakiteBe2SiO4
Be BerylBe3Al2(Si6O18)
Be Beryl (var: Aquamarine)Be3Al2Si6O18
O TopazAl2(SiO4)(F,OH)2
O Quartz (var: Smoky Quartz)SiO2
O PhenakiteBe2SiO4
O BerylBe3Al2(Si6O18)
O Beryl (var: Aquamarine)Be3Al2Si6O18
O MicroclineK(AlSi3O8)
O QuartzSiO2
F TopazAl2(SiO4)(F,OH)2
F FluoriteCaF2
Al TopazAl2(SiO4)(F,OH)2
Al BerylBe3Al2(Si6O18)
Al Beryl (var: Aquamarine)Be3Al2Si6O18
Al MicroclineK(AlSi3O8)
Si TopazAl2(SiO4)(F,OH)2
Si Quartz (var: Smoky Quartz)SiO2
Si PhenakiteBe2SiO4
Si BerylBe3Al2(Si6O18)
Si Beryl (var: Aquamarine)Be3Al2Si6O18
Si MicroclineK(AlSi3O8)
Si QuartzSiO2
K MicroclineK(AlSi3O8)
Ca FluoriteCaF2

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org


ID: 1585724
Canadian areas within quadrangles, southeast Alaska

Age: Anthropocene ( Ma)

Description: Unmapped areas of quadrangle

Reference: Wilson, F.H., Hults, C.P., Mull, C.G, and Karl, S.M. (compilers). Geologic map of Alaska. doi: 10.3133/sim3340. U.S. Geological Survey Scientific Investigations Map 3340, pamphlet 196. [21]

Late Cretaceous
66 - 100.5 Ma

ID: 661611
Late Cretaceous intrusive rocks

Age: Late Cretaceous (66 - 100.5 Ma)

Description: Biotite-hornblende granite to alaskite: miarolitic in part, includes the Little Eagle Pluton (104I) and small plutons within the Cassiar batholith near Cassiar (Cassiar and Storie molybdenite porphyries).

Comments: M.G. Mihalynuk, K.A. Bellefontaine, D.A. Brown, J.M. Logan, J.L. Nelson, A.S. Legun and L. J. Diakow with contributions by; H. Gabrielse, J.W.H. Monger, H.W. Tipper, L.D. Currie, C. Evenchick, 1996, Digital Geology, Northwest BC, OF 1996-11, BCGS

Lithology: Granite, alkali feldspar granite intrusive rocks

Reference: B.C. Geological Survey. British Columbia Digital Geology. [3]

Late Cretaceous
66 - 100.5 Ma

ID: 3431280
intrusive rocks

Age: Late Cretaceous (66 - 100.5 Ma)

Description: Biotite-hornblende granite to alaskite: miarolitic in part, includes the Little Eagle Pluton (104I) and small plutons within the Cassiar batholith near Cassiar (Cassiar and Storie molybdenite porphyries).

Comments: Post Accretionary terrane

Lithology: Granite, alkali feldspar granite intrusive rocks

Reference: Cui, Y., Miller, D., Schiarizza, P., and Diakow, L.J. British Columbia digital geology. British Columbia Ministry of Energy, Mines and Petroleum Resources, British Columbia Geological Survey Open File 2017-8. [205]

66 - 145 Ma

ID: 3187046
Mesozoic intrusive rocks

Age: Cretaceous (66 - 145 Ma)

Lithology: Intrusive igneous rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

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