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Round Top prospects, Sierra Blanca Peaks, Hudspeth County, Texas, USAi
Regional Level Types
Round Top prospectsGroup of Prospects
Sierra Blanca PeaksSierra
Hudspeth CountyCounty
TexasState
USACountry

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Latitude & Longitude (WGS84):
31° 16' 56'' North , 105° 28' 29'' West
Latitude & Longitude (decimal):
31.28250,-105.47472
GRN:
N21W65
Type:
Group of Prospects
Köppen climate type:
BWk : Cold desert climate
Nearest Settlements:
PlacePopulationDistance
Sierra Blanca553 (2011)16.4km
Fort Hancock1,750 (2011)35.2km
Porvenir1,253 (2018)38.5km
San José de Paredes153 (2018)42.4km
Esperanza710 (2018)46.6km
Mindat Locality ID:
43068
Long-form identifier:
mindat:1:2:43068:4
GUID (UUID V4):
0


The laccolith is anomalous within the region in that it is peraluminous and
enriched in HREEs, F, and U, and is comprised of intermingled discrete
packages of various rhyolite types. Also lithium rich micas. Unknown mineral is a Nb-rich oxide with minor amounts of Ta, Fe, Mn, Pb, and F

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


30 valid minerals.

Rock Types Recorded

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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Aeschynite-(Ce)
Formula: Ce(TiNb)O6
ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ Ancylite-(La)
Formula: LaSr(CO3)2(OH) · H2O
ⓘ Annite
Formula: KFe2+3(AlSi3O10)(OH)2
ⓘ Baryte
Formula: BaSO4
ⓘ 'Bastnäsite'
Formula: (Ce/Nd/Y/REE)(CO3)F
ⓘ Bastnäsite-(Ce)
Formula: Ce(CO3)F
ⓘ Bertrandite
Formula: Be4(Si2O7)(OH)2
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Calcite
Formula: CaCO3
ⓘ Cassiterite
Formula: SnO2
ⓘ Cerianite-(Ce)
Formula: (Ce4+,Th)O2
ⓘ Cerussite
Formula: PbCO3
ⓘ Changbaiite
Formula: PbNb2O6
ⓘ Coffinite
Formula: U(SiO4) · nH2O
ⓘ Columbite-(Fe)
Formula: Fe2+Nb2O6
ⓘ 'Columbite-(Fe)-Columbite-(Mn) Series'
ⓘ Cryolite
Formula: Na2NaAlF6
ⓘ Elpasolite
Formula: K2NaAlF6
ⓘ 'Feldspar Group'
ⓘ Fluellite
Formula: Al2(PO4)F2(OH) · 7H2O
ⓘ Fluorite
Formula: CaF2
ⓘ Fluorite var. Cerfluorite
Formula: (Ca,Ce)F2+x
ⓘ Fluorite var. Yttrocerite
Formula: (Ca,Y,Ce)F2+x
ⓘ Fluorite var. Yttrofluorite
Formula: (Ca1-xYx)F2+x where 0.05 < x < 0.3
References:
Weng, Z. H., Jowitt, S. M., Mudd, G. M., & Haque, N. (2013). Assessing rare earth element mineral deposit types and links to environmental impacts. Applied Earth Science, 122(2), 83-96.
O'Neill, L. C. (2014). REE-Be-UF mineralization of the Round Top laccolith, Sierra Blanca Peaks, Trans-Pecos Texas (MS dissertation).
Elliott, Brent A. (2018) "Petrogenesis of Heavy Rare Earth Element Enriched Rhyolite: Source and Magmatic Evolution of the Round Top Laccolith, Trans-Pecos, Texas" Minerals 8, no. 10: 423. https://doi.org/10.3390/min8100423
Piccione, G., Rasbury, E. T., Elliott, B. A., Kyle, J. R., Jaret, S. J., Acerbo, A. S., ... & Parrish, R. R. (2019). Vein fluorite U-Pb dating demonstrates post–6.2 Ma rare-earth element mobilization associated with Rio Grande rifting. Geosphere, 15(6), 1958-1972.
ⓘ Hematite
Formula: Fe2O3
ⓘ Kaolinite
Formula: Al2(Si2O5)(OH)4
ⓘ Kasolite
Formula: Pb(UO2)(SiO4) · H2O
ⓘ 'K Feldspar'
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Nacrite
Formula: Al2(Si2O5)(OH)4
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ 'Pyrochlore Supergroup'
Formula: A2-mD2X6-wZ1-n
ⓘ 'Pyrochlore Supergroup var. Betafite (of Hogarth 1977)'
Formula: (Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Rutilated Quartz
Formula: SiO2
ⓘ 'Sodic plagioclase'
ⓘ 'Synchysite'
Formula: Ca(Ce/Nd/Y/REE)(CO3)2F
ⓘ 'Tantalite'
Formula: (Mn,Fe)(Ta,Nb)2O6
ⓘ Thomsenolite
Formula: NaCa[AlF6] · H2O
ⓘ Thorite
Formula: Th(SiO4)
ⓘ Uraninite
Formula: UO2
ⓘ 'Xenotime'
ⓘ Xenotime-(Y)
Formula: Y(PO4)
ⓘ Zircon
Formula: Zr(SiO4)
ⓘ Zunyite
Formula: Al13Si5O20(OH,F)18Cl

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
ⓘFluorite3.AB.25CaF2
ⓘvar. Yttrofluorite3.AB.25(Ca1-xYx)F2+x where 0.05 < x < 0.3
ⓘvar. Yttrocerite3.AB.25(Ca,Y,Ce)F2+x
ⓘvar. Cerfluorite3.AB.25(Ca,Ce)F2+x
ⓘCryolite3.CB.15Na2NaAlF6
ⓘElpasolite3.CB.15K2NaAlF6
ⓘThomsenolite3.CB.40NaCa[AlF6] · H2O
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘHematite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
ⓘvar. Rutilated Quartz4.DA.05SiO2
ⓘCassiterite4.DB.05SnO2
ⓘColumbite-(Fe)4.DB.35Fe2+Nb2O6
ⓘAeschynite-(Ce)4.DF.05Ce(TiNb)O6
ⓘChangbaiite4.DF.10PbNb2O6
ⓘCerianite-(Ce)4.DL.05(Ce4+,Th)O2
ⓘUraninite4.DL.05UO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘCerussite5.AB.15PbCO3
ⓘBastnäsite-(Ce)5.BD.20aCe(CO3)F
ⓘAncylite-(La)5.DC.05LaSr(CO3)2(OH) · H2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
Group 8 - Phosphates, Arsenates and Vanadates
ⓘXenotime-(Y)8.AD.35Y(PO4)
ⓘFluellite8.DE.10Al2(PO4)F2(OH) · 7H2O
Group 9 - Silicates
ⓘCoffinite9.AD.30U(SiO4) · nH2O
ⓘThorite9.AD.30Th(SiO4)
ⓘZircon9.AD.30Zr(SiO4)
ⓘKasolite9.AK.15Pb(UO2)(SiO4) · H2O
ⓘBertrandite9.BD.05Be4(Si2O7)(OH)2
ⓘZunyite9.BJ.55Al13Si5O20(OH,F)18Cl
ⓘAnnite9.EC.20KFe2+3(AlSi3O10)(OH)2
ⓘKaolinite9.ED.05Al2(Si2O5)(OH)4
ⓘNacrite9.ED.05Al2(Si2O5)(OH)4
ⓘAlbite9.FA.35Na(AlSi3O8)
Unclassified
ⓘ'Bastnäsite'-(Ce/Nd/Y/REE)(CO3)F
ⓘ'Pyrochlore Supergroup
var. Betafite (of Hogarth 1977)'		-(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Feldspar Group'-
ⓘ'Tantalite'-(Mn,Fe)(Ta,Nb)2O6
ⓘ'Xenotime'-
ⓘ'Synchysite'-Ca(Ce/Nd/Y/REE)(CO3)2F
ⓘ'Columbite-(Fe)-Columbite-(Mn) Series'-
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'K Feldspar'-
ⓘ'Pyrochlore Supergroup'-A2-mD2X6-wZ1-n
ⓘ'Sodic plagioclase'-

List of minerals for each chemical element

HHydrogen
Hⓘ AnniteKFe32+(AlSi3O10)(OH)2
Hⓘ BertranditeBe4(Si2O7)(OH)2
Hⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ CoffiniteU(SiO4) · nH2O
Hⓘ FluelliteAl2(PO4)F2(OH) · 7H2O
Hⓘ KaoliniteAl2(Si2O5)(OH)4
Hⓘ KasolitePb(UO2)(SiO4) · H2O
Hⓘ NacriteAl2(Si2O5)(OH)4
Hⓘ ThomsenoliteNaCa[AlF6] · H2O
Hⓘ ZunyiteAl13Si5O20(OH,F)18Cl
Hⓘ Ancylite-(La)LaSr(CO3)2(OH) · H2O
BeBeryllium
Beⓘ BertranditeBe4(Si2O7)(OH)2
CCarbon
Cⓘ Bastnäsite-(Ce)Ce(CO3)F
Cⓘ Bastnäsite(Ce/Nd/Y/REE)(CO3)F
Cⓘ CalciteCaCO3
Cⓘ CerussitePbCO3
Cⓘ Ancylite-(La)LaSr(CO3)2(OH) · H2O
Cⓘ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
OOxygen
Oⓘ Aeschynite-(Ce)Ce(TiNb)O6
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ AnniteKFe32+(AlSi3O10)(OH)2
Oⓘ BaryteBaSO4
Oⓘ Bastnäsite-(Ce)Ce(CO3)F
Oⓘ Bastnäsite(Ce/Nd/Y/REE)(CO3)F
Oⓘ BertranditeBe4(Si2O7)(OH)2
Oⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ CalciteCaCO3
Oⓘ CassiteriteSnO2
Oⓘ Cerianite-(Ce)(Ce4+,Th)O2
Oⓘ CerussitePbCO3
Oⓘ ChangbaiitePbNb2O6
Oⓘ CoffiniteU(SiO4) · nH2O
Oⓘ Columbite-(Fe)Fe2+Nb2O6
Oⓘ FluelliteAl2(PO4)F2(OH) · 7H2O
Oⓘ HematiteFe2O3
Oⓘ KaoliniteAl2(Si2O5)(OH)4
Oⓘ KasolitePb(UO2)(SiO4) · H2O
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ NacriteAl2(Si2O5)(OH)4
Oⓘ QuartzSiO2
Oⓘ Quartz var. Rutilated QuartzSiO2
Oⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
Oⓘ ThomsenoliteNaCa[AlF6] · H2O
Oⓘ ThoriteTh(SiO4)
Oⓘ UraniniteUO2
Oⓘ Xenotime-(Y)Y(PO4)
Oⓘ ZirconZr(SiO4)
Oⓘ ZunyiteAl13Si5O20(OH,F)18Cl
Oⓘ Ancylite-(La)LaSr(CO3)2(OH) · H2O
Oⓘ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
Oⓘ Columbite-(Fe)-Columbite-(Mn) Series
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
FFluorine
Fⓘ Bastnäsite-(Ce)Ce(CO3)F
Fⓘ Bastnäsite(Ce/Nd/Y/REE)(CO3)F
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ CryoliteNa2NaAlF6
Fⓘ ElpasoliteK2NaAlF6
Fⓘ FluelliteAl2(PO4)F2(OH) · 7H2O
Fⓘ FluoriteCaF2
Fⓘ ThomsenoliteNaCa[AlF6] · H2O
Fⓘ Fluorite var. Yttrofluorite(Ca1-xYx)F2+x where 0.05 < x < 0.3
Fⓘ ZunyiteAl13Si5O20(OH,F)18Cl
Fⓘ Fluorite var. Yttrocerite(Ca,Y,Ce)F2+x
Fⓘ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
Fⓘ Fluorite var. Cerfluorite(Ca,Ce)F2+x
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Naⓘ CryoliteNa2NaAlF6
Naⓘ ElpasoliteK2NaAlF6
Naⓘ ThomsenoliteNaCa[AlF6] · H2O
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ AnniteKFe32+(AlSi3O10)(OH)2
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ CryoliteNa2NaAlF6
Alⓘ ElpasoliteK2NaAlF6
Alⓘ FluelliteAl2(PO4)F2(OH) · 7H2O
Alⓘ KaoliniteAl2(Si2O5)(OH)4
Alⓘ NacriteAl2(Si2O5)(OH)4
Alⓘ ThomsenoliteNaCa[AlF6] · H2O
Alⓘ ZunyiteAl13Si5O20(OH,F)18Cl
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ AnniteKFe32+(AlSi3O10)(OH)2
Siⓘ BertranditeBe4(Si2O7)(OH)2
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ CoffiniteU(SiO4) · nH2O
Siⓘ KaoliniteAl2(Si2O5)(OH)4
Siⓘ KasolitePb(UO2)(SiO4) · H2O
Siⓘ NacriteAl2(Si2O5)(OH)4
Siⓘ QuartzSiO2
Siⓘ Quartz var. Rutilated QuartzSiO2
Siⓘ ThoriteTh(SiO4)
Siⓘ ZirconZr(SiO4)
Siⓘ ZunyiteAl13Si5O20(OH,F)18Cl
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
PPhosphorus
Pⓘ FluelliteAl2(PO4)F2(OH) · 7H2O
Pⓘ Xenotime-(Y)Y(PO4)
SSulfur
Sⓘ BaryteBaSO4
ClChlorine
Clⓘ ZunyiteAl13Si5O20(OH,F)18Cl
KPotassium
Kⓘ AnniteKFe32+(AlSi3O10)(OH)2
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ ElpasoliteK2NaAlF6
CaCalcium
Caⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Caⓘ CalciteCaCO3
Caⓘ FluoriteCaF2
Caⓘ ThomsenoliteNaCa[AlF6] · H2O
Caⓘ Fluorite var. Yttrofluorite(Ca1-xYx)F2+x where 0.05 < x < 0.3
Caⓘ Fluorite var. Yttrocerite(Ca,Y,Ce)F2+x
Caⓘ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Caⓘ Fluorite var. Cerfluorite(Ca,Ce)F2+x
TiTitanium
Tiⓘ Aeschynite-(Ce)Ce(TiNb)O6
Tiⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MnManganese
Mnⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
Mnⓘ Columbite-(Fe)-Columbite-(Mn) Series
FeIron
Feⓘ AnniteKFe32+(AlSi3O10)(OH)2
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ Columbite-(Fe)Fe2+Nb2O6
Feⓘ HematiteFe2O3
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
Feⓘ Columbite-(Fe)-Columbite-(Mn) Series
SrStrontium
Srⓘ Ancylite-(La)LaSr(CO3)2(OH) · H2O
YYttrium
Yⓘ Bastnäsite(Ce/Nd/Y/REE)(CO3)F
Yⓘ Xenotime-(Y)Y(PO4)
Yⓘ Fluorite var. Yttrofluorite(Ca1-xYx)F2+x where 0.05 < x < 0.3
Yⓘ Fluorite var. Yttrocerite(Ca,Y,Ce)F2+x
Yⓘ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
ZrZirconium
Zrⓘ ZirconZr(SiO4)
NbNiobium
Nbⓘ Aeschynite-(Ce)Ce(TiNb)O6
Nbⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Nbⓘ ChangbaiitePbNb2O6
Nbⓘ Columbite-(Fe)Fe2+Nb2O6
Nbⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
Nbⓘ Columbite-(Fe)-Columbite-(Mn) Series
SnTin
Snⓘ CassiteriteSnO2
BaBarium
Baⓘ BaryteBaSO4
LaLanthanum
Laⓘ Ancylite-(La)LaSr(CO3)2(OH) · H2O
CeCerium
Ceⓘ Aeschynite-(Ce)Ce(TiNb)O6
Ceⓘ Bastnäsite-(Ce)Ce(CO3)F
Ceⓘ Bastnäsite(Ce/Nd/Y/REE)(CO3)F
Ceⓘ Cerianite-(Ce)(Ce4+,Th)O2
Ceⓘ Fluorite var. Yttrocerite(Ca,Y,Ce)F2+x
Ceⓘ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
Ceⓘ Fluorite var. Cerfluorite(Ca,Ce)F2+x
NdNeodymium
Ndⓘ Bastnäsite(Ce/Nd/Y/REE)(CO3)F
Ndⓘ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
TaTantalum
Taⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Taⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
PbLead
Pbⓘ CerussitePbCO3
Pbⓘ ChangbaiitePbNb2O6
Pbⓘ KasolitePb(UO2)(SiO4) · H2O
ThThorium
Thⓘ Cerianite-(Ce)(Ce4+,Th)O2
Thⓘ ThoriteTh(SiO4)
UUranium
Uⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Uⓘ CoffiniteU(SiO4) · nH2O
Uⓘ KasolitePb(UO2)(SiO4) · H2O
Uⓘ UraniniteUO2

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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References

O'Neill, L. C. (2014). REE-Be-UF mineralization of the Round Top laccolith, Sierra Blanca Peaks, Trans-Pecos Texas (MS dissertation).
Elliott, Brent A. (2018) "Petrogenesis of Heavy Rare Earth Element Enriched Rhyolite: Source and Magmatic Evolution of the Round Top Laccolith, Trans-Pecos, Texas" Minerals 8, no. 10: 423. https://doi.org/10.3390/min8100423
Piccione, G., Rasbury, E. T., Elliott, B. A., Kyle, J. R., Jaret, S. J., Acerbo, A. S., ... & Parrish, R. R. (2019). Vein fluorite U-Pb dating demonstrates post–6.2 Ma rare-earth element mobilization associated with Rio Grande rifting. Geosphere, 15(6), 1958-1972.
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