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Gambo Falls Staurolite locality, Gorham, Cumberland County, Maine, USAi
Regional Level Types
Gambo Falls Staurolite locality- not defined -
Gorham- not defined -
Cumberland CountyCounty
MaineState
USACountry

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PhotosMapsSearch
Latitude & Longitude (WGS84):
43° 44' 46'' North , 70° 26' 23'' West
Latitude & Longitude (decimal):
Nearest Settlements:
PlacePopulationDistance
South Windham1,374 (2017)1.7km
Little Falls708 (2017)1.9km
Gorham6,882 (2017)7.4km
Standish469 (2017)9.1km
Westbrook17,978 (2017)9.5km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Maine Mineralogical & Geological SocietyPortland, Maine18km
Mindat Locality ID:
6685
Long-form identifier:
mindat:1:2:6685:6
GUID (UUID V4):
74ee0850-eeeb-4ea1-8c35-f914c117c688


Metamorphic deposit. Gambo Falls and Gambo Dam are situated on the Presumpscot River, which forms the boundary between Gorham (west bank) and Windham (east bank), Maine.

Gambo Falls was the site of an important 19th-century gunpowder mill built in 1828 by the Gorham Powder Company and known locally as the Gambo powder mills. The mill utilized water power from the 16-foot (5 m) drop in the river to process sulfur from Sicily, saltpeter from India, and charcoal produced on site from locally harvested wood into black powder for ammunition and blasting.

Following an explosion that killed seven workers in 1855 (the sixth fatal explosion at the site; in all more than 30 explosions killed 46 workers and injured scores more during 77 years of production) the mill changed hands in 1855 and became the Oriental Powder Company. Powder from the Oriental mill propelled projectiles in the Crimean War in the 1850s and comprised a significant share of the powder used by Union forces in the U.S. Civil War in the 1860s. Powder production ceased in 1904, but the mill remained in operation until the 1950s to produce wood flour used elsewhere in the manufacture of dynamite.

Today the site, featuring numerous stone foundations and also remnants of the Oxford & Cumberland Canal, is a popular local recreation area and trailhead known as Shaw Park on the west bank of the Presumpscot River in Gorham. A small hydroelectric plant on the Windham side of the river generates electric power at the dam.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


5 valid minerals.

Detailed Mineral List:

Almandine
Formula: Fe2+3Al2(SiO4)3
Andalusite
Formula: Al2(SiO4)O
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Quartz
Formula: SiO2
Sillimanite
Formula: Al2(SiO4)O
Staurolite
Formula: Fe2+2Al9Si4O23(OH)

Gallery:

Fe2+3Al2(SiO4)3 Almandine
Fe2+2Al9Si4O23(OH) Staurolite

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 9 - Silicates
Almandine9.AD.25Fe2+3Al2(SiO4)3
Sillimanite9.AF.05Al2(SiO4)O
Andalusite9.AF.10Al2(SiO4)O
Staurolite9.AF.30Fe2+2Al9Si4O23(OH)
Unclassified
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

List of minerals for each chemical element

HHydrogen
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
H StauroliteFe22+Al9Si4O23(OH)
OOxygen
O AndalusiteAl2(SiO4)O
O AlmandineFe32+Al2(SiO4)3
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
O QuartzSiO2
O SillimaniteAl2(SiO4)O
O StauroliteFe22+Al9Si4O23(OH)
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MgMagnesium
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Al AndalusiteAl2(SiO4)O
Al AlmandineFe32+Al2(SiO4)3
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Al SillimaniteAl2(SiO4)O
Al StauroliteFe22+Al9Si4O23(OH)
SiSilicon
Si AndalusiteAl2(SiO4)O
Si AlmandineFe32+Al2(SiO4)3
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Si QuartzSiO2
Si SillimaniteAl2(SiO4)O
Si StauroliteFe22+Al9Si4O23(OH)
KPotassium
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
TiTitanium
Ti BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeIron
Fe AlmandineFe32+Al2(SiO4)3
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fe StauroliteFe22+Al9Si4O23(OH)

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Oriental_Powder_Company
Wikidata ID:Q7102363

Other Regions, Features and Areas containing this locality


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.
 
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