Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Spears Corner Locality, West Gardiner, Kennebec County, Maine, USAi
Regional Level Types
Spears Corner LocalityDeposit
West GardinerTown
Kennebec CountyCounty
MaineState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearchMineralogy
Latitude & Longitude (WGS84):
44° 12' 16'' North , 69° 53' 0'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Gardiner5,597 (2017)9.1km
Randolph1,772 (2017)9.7km
Farmingdale1,970 (2017)10.0km
Pittston2,649 (2017)10.4km
Hallowell2,315 (2017)11.7km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Kennebec Rocks and Minerals ClubWinthrop, Maine13km
Mindat Locality ID:
7379
Long-form identifier:
mindat:1:2:7379:3
GUID (UUID V4):
0


Nepheline-syenite deposit. Float boulders thought to have originated on Dennis Hill. Spears Corner is not the only locality in the town, as the boulders were transported by glaciers.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


7 valid minerals.

Rock Types Recorded


Select Rock List Type

Alphabetical List Tree Diagram

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
Zircon9.AD.30Zr(SiO4)
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Riebeckite9.DE.25◻Na2(Fe2+3Fe3+2)Si8O22(OH)2
Nepheline9.FA.05Na3K(Al4Si4O16)
Albite9.FA.35Na(AlSi3O8)
Cancrinite9.FB.05(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Sodalite9.FB.10Na4(Si3Al3)O12Cl

List of minerals for each chemical element

HHydrogen
H Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
H Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
CCarbon
C Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
OOxygen
O AlbiteNa(AlSi3O8)
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
O NephelineNa3K(Al4Si4O16)
O Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
O SodaliteNa4(Si3Al3)O12Cl
O ZirconZr(SiO4)
NaSodium
Na AlbiteNa(AlSi3O8)
Na Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Na NephelineNa3K(Al4Si4O16)
Na Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
Na SodaliteNa4(Si3Al3)O12Cl
MgMagnesium
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
AlAluminium
Al AlbiteNa(AlSi3O8)
Al Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Al NephelineNa3K(Al4Si4O16)
Al SodaliteNa4(Si3Al3)O12Cl
SiSilicon
Si AlbiteNa(AlSi3O8)
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Si NephelineNa3K(Al4Si4O16)
Si Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
Si SodaliteNa4(Si3Al3)O12Cl
Si ZirconZr(SiO4)
SSulfur
S Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
ClChlorine
Cl SodaliteNa4(Si3Al3)O12Cl
KPotassium
K NephelineNa3K(Al4Si4O16)
CaCalcium
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
FeIron
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
ZrZirconium
Zr ZirconZr(SiO4)

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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.
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 3, 2026 03:24:40 Page updated: July 23, 2026 14:29:16
Go to top of page