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

Mount Rubidoux, Riverside, Riverside County, California, USAi
Regional Level Types
Mount RubidouxMountain
RiversideCity
Riverside CountyCounty
CaliforniaState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
Latitude & Longitude (WGS84):
33° 59' 2'' North , 117° 23' 31'' West
Latitude & Longitude (decimal):
Nearest Settlements:
PlacePopulationDistance
Rubidoux34,280 (2011)1.8km
Riverside322,424 (2017)3.4km
Sunnyslope5,153 (2011)4.9km
Highgrove3,988 (2011)6.5km
Pedley12,672 (2011)7.8km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
West End Prospectors CorporationNorco, California16km
Orange Belt Mineralogical SocietySan Bernardino, California17km
Valley Prospectors, Inc.San Bernardino, California17km
Yucaipa Valley Gem & Mineral SocietyYucaipa, California33km
Route 66 Gold Miners IncBrea, California47km
Mindat Locality ID:
209698
Long-form identifier:
mindat:1:2:209698:1
GUID (UUID V4):
0


A summit located along the eastern side of the Santa Ana River, within the corporate limits of the city of Riverside, on city park land.

NOTE: The populated area named Rubidoux is on the western side of the river and is now a part of the city of Jurupa Valley.

Mineralization is hosted in leucogranite.

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.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Fayalite
Formula: Fe2+2SiO4
Ferrosilite
Formula: Fe2+2Si2O6
Hastingsite
Formula: NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2
Description: Occurs in granite.
'Iddingsite'
Description: Occurs as an alteration product of fayalite.
'Monazite Group'
Formula: REE(PO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
Fayalite9.AC.05Fe2+2SiO4
Ferrosilite9.DA.05Fe2+2Si2O6
Hastingsite9.DE.15NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2
Unclassified
'Monazite Group'-REE(PO4)
'Iddingsite'-

List of minerals for each chemical element

HHydrogen
H HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
OOxygen
O FayaliteFe22+SiO4
O FerrosiliteFe22+Si2O6
O HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
O Monazite GroupREE(PO4)
NaSodium
Na HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
AlAluminium
Al HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
SiSilicon
Si FayaliteFe22+SiO4
Si FerrosiliteFe22+Si2O6
Si HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
PPhosphorus
P Monazite GroupREE(PO4)
CaCalcium
Ca HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
FeIron
Fe FayaliteFe22+SiO4
Fe FerrosiliteFe22+Si2O6
Fe HastingsiteNaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2

Localities in this Region

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America Plate
Pacific 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.

References

 
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 09:32:08 Page updated: November 24, 2025 18:13:35
Go to top of page