Vote for your favorite mineral in #MinCup26! - Cuprite vs. Orpiment
It's a fiery match of vibrant red Cuprite and just as saturated orange Orpiment battle for 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

Franklin Mountains (Franklin Range), El Paso County, Texas, USAi
Regional Level Types
Franklin Mountains (Franklin Range)Mountain Range
El Paso CountyCounty
TexasState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearchMineralogy
05999750017272071163168.jpg
Castner Marble flat-pebble conglomerate

Franklin Mountains, El Paso County, Texas, USA
08311580017272071167895.jpg
Castner Marble fault breccia

Franklin Mountains, El Paso County, Texas, USA
00536440017272071177448.jpg
Franklin Mountains, c. 1905

Franklin Mountains, El Paso County, Texas, USA
05999750017272071163168.jpg
Castner Marble flat-pebble conglomerate

Franklin Mountains, El Paso County, Texas, USA
08311580017272071167895.jpg
Castner Marble fault breccia

Franklin Mountains, El Paso County, Texas, USA
00536440017272071177448.jpg
Franklin Mountains, c. 1905

Franklin Mountains, El Paso County, Texas, USA
05999750017272071163168.jpg
Castner Marble flat-pebble conglomerate

Franklin Mountains, El Paso County, Texas, USA
08311580017272071167895.jpg
Castner Marble fault breccia

Franklin Mountains, El Paso County, Texas, USA
Latitude & Longitude (WGS84):
31° 54' 35'' North , 106° 29' 52'' West
Latitude & Longitude (decimal):
31.90994,-106.49791
GRN:
N22W65
Type:
Mountain Range
Köppen climate type:
BWk : Cold desert climate
Mindat Locality ID:
42074
Long-form identifier:
mindat:1:2:42074:8
GUID (UUID V4):
0
Other/historical names associated with this locality:
Las Sierras de los Mansos; Las Sierras de los Organos; Organ Mountains


A mountain range along the Texas-New Mexico border. The highest elevation is North Franklin Mountain at 7,192 feet, in Texas. Approximately 23 miles long.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

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

17 valid minerals.

Rock Types Recorded


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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Beryl
Formula: Be3Al2(Si6O18)
ⓘ Beryl var. Aquamarine
ⓘ Calcite
Formula: CaCO3
ⓘ Cassiterite
Formula: SnO2
ⓘ Diopside
Formula: CaMgSi2O6
ⓘ 'Feldspar Group'
ⓘ Fluorite
Formula: CaF2
ⓘ Forsterite
Formula: Mg2(SiO4)
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ 'Hornblende Root Name Group'
Formula: ◻Ca2(C2+4C3+)(AlSi7O22)W2
ⓘ 'Limonite'
ⓘ Microcline
Formula: K(AlSi3O8)
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
ⓘ Riebeckite
Formula: ◻Na2(Fe2+3Fe3+2)Si8O22(OH)2
ⓘ Romarchite ?
Formula: SnO
ⓘ 'Scapolite'
ⓘ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ Siderite
Formula: FeCO3
ⓘ Stannite
Formula: Cu2FeSnS4
ⓘ Titanite
Formula: CaTiO(SiO4)
ⓘ Topaz
Formula: Al2(SiO4)(F,OH)2
ⓘ 'Tourmaline'
Formula: AD3G6(T6O18)(BO3)3X3Z
ⓘ 'Wolframite Group'

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘStannite2.CB.15aCu2FeSnS4
ⓘPyrite2.EB.05aFeS2
Group 3 - Halides
ⓘFluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
ⓘRomarchite ?4.AC.20SnO
ⓘQuartz4.DA.05SiO2
ⓘCassiterite4.DB.05SnO2
ⓘ'Wolframite Group'4.DB.30 va
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘSiderite5.AB.05FeCO3
Group 9 - Silicates
ⓘForsterite9.AC.05Mg2(SiO4)
ⓘTopaz9.AF.35Al2(SiO4)(F,OH)2
ⓘTitanite9.AG.15CaTiO(SiO4)
ⓘBeryl
var. Aquamarine		9.CJ.05Be3Al2(Si6O18)
ⓘ9.CJ.05Be3Al2(Si6O18)
ⓘSchorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘDiopside9.DA.15CaMgSi2O6
ⓘRiebeckite9.DE.25◻Na2(Fe2+3Fe3+2)Si8O22(OH)2
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘMicrocline9.FA.30K(AlSi3O8)
Unclassified
ⓘ'Feldspar Group'-
ⓘ'Limonite'-
ⓘ'Tourmaline'-AD3G6(T6O18)(BO3)3X3Z
ⓘ'Scapolite'-
ⓘ'Hornblende Root Name Group'-◻Ca2(C2+4C3+)(AlSi7O22)W2
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Garnet Group'-X3Z2(SiO4)3
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
Hⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Hⓘ TopazAl2(SiO4)(F,OH)2
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
BeBeryllium
Beⓘ BerylBe3Al2(Si6O18)
BBoron
Bⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Bⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
CCarbon
Cⓘ CalciteCaCO3
Cⓘ SideriteFeCO3
OOxygen
Oⓘ BerylBe3Al2(Si6O18)
Oⓘ CalciteCaCO3
Oⓘ CassiteriteSnO2
Oⓘ DiopsideCaMgSi2O6
Oⓘ ForsteriteMg2(SiO4)
Oⓘ MicroclineK(AlSi3O8)
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
Oⓘ RomarchiteSnO
Oⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ SideriteFeCO3
Oⓘ TitaniteCaTiO(SiO4)
Oⓘ TopazAl2(SiO4)(F,OH)2
Oⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
Oⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Garnet GroupX3Z2(SiO4)3
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
FFluorine
Fⓘ FluoriteCaF2
Fⓘ TopazAl2(SiO4)(F,OH)2
NaSodium
Naⓘ Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
Naⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ ForsteriteMg2(SiO4)
AlAluminium
Alⓘ BerylBe3Al2(Si6O18)
Alⓘ MicroclineK(AlSi3O8)
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Alⓘ TopazAl2(SiO4)(F,OH)2
Alⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ DiopsideCaMgSi2O6
Siⓘ ForsteriteMg2(SiO4)
Siⓘ MicroclineK(AlSi3O8)
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
Siⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ TitaniteCaTiO(SiO4)
Siⓘ TopazAl2(SiO4)(F,OH)2
Siⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Garnet GroupX3Z2(SiO4)3
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
SSulfur
Sⓘ PyriteFeS2
Sⓘ StanniteCu2FeSnS4
KPotassium
Kⓘ MicroclineK(AlSi3O8)
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ DiopsideCaMgSi2O6
Caⓘ FluoriteCaF2
Caⓘ TitaniteCaTiO(SiO4)
Caⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
TiTitanium
Tiⓘ TitaniteCaTiO(SiO4)
FeIron
Feⓘ PyriteFeS2
Feⓘ Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
Feⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Feⓘ SideriteFeCO3
Feⓘ StanniteCu2FeSnS4
CuCopper
Cuⓘ StanniteCu2FeSnS4
SnTin
Snⓘ CassiteriteSnO2
Snⓘ RomarchiteSnO
Snⓘ StanniteCu2FeSnS4

Localities in this Region

USA

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.

References

US Board on Geographic Names (n.d.) https://geonames.usgs.gov/apex/f?p=138:3:0::NO:3:P3_FID,P3_TITLE:897369,Franklin%20Mountains
Ransom, Jay Ellis (1974) Gems and Minerals of America - A Guide to Rock Collecting. Harper & Row.p.542
Smith, Arthur E. (1991) Texas Mineral Locality Index. Rocks & Minerals, 66 (3) 196-224 doi:10.1080/00357529.1991.11761622
Quick NavTopCommoditiesMineral ListRock TypesLocalities in RegionOther RegionsReferences
 
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 5, 2026 06:22:06 Page updated: July 24, 2026 11:30:07
Go to top of page