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Williamson Co., Texas, USAi
Regional Level Types
Williamson Co.County
TexasState
USACountry

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Key
Locality type:
Largest Settlements:
PlacePopulation
Round Rock115,997 (2017)
Cedar Park65,945 (2017)
Georgetown63,716 (2017)
Leander37,889 (2017)
Hutto22,722 (2017)
Brushy Creek21,764 (2011)
Other Languages:
French:
comté de Williamson, Texas, États-Unis
German:
Williamson County, Texas, Vereinigte Staaten
Italian:
contea di Williamson, Texas, Stati Uniti d'America
Russian:
Уильямсон, Техас, Соединённые Штаты Америки
Simplified Chinese:
威廉森縣, 德克萨斯州, 美国
Spanish:
Condado de Williamson, Texas, Estados Unidos
Albanian:
Williamson County, Texas, Shtetet e Bashkuara të Amerikës
Arabic:
مقاطعة ويليامسون , تكساس, الولايات المتحدة
Armenian:
Վիլյամսոն շրջան, Տեխաս, Ամերիկայի Միացյալ Նահանգներ
Basque:
Williamson konderria , Texas
Bavarian:
Williamson County, Texas, Vaoanigte Stootn
Bishnupriya Manipuri:
উইলিয়ামসন কাউন্টি, টেক্সাস, তিলপারাষ্ট্র
Bulgarian:
Уилиямсън, Тексас, Съединени американски щати
Cebuano:
Williamson County , Texas
Czech:
Williamson County, Texas, Spojené státy americké
Dutch:
Williamson County, Texas, Verenigde Staten
Estonian:
Williamsoni maakond , Texas, Ameerika Ühendriigid
Farsi/Persian:
شهرستان ویلیامسون، تگزاس, تگزاس, ایالات متحده آمریکا
Georgian:
უილიამსონის ოლქი, ტეხასი, ამერიკის შეერთებული შტატები
Hebrew:
מחוז ויליאמסון, טקסס, ארצות הברית
Hungarian:
Williamson megye, Texas, Amerikai Egyesült Államok
Irish Gaelic:
Contae Williamson, Texas, Stáit Aontaithe Mheiriceá
Japanese:
ウィリアムソン郡, テキサス州, アメリカ合衆国
Latin:
Williamson Comitatus, Texia, Civitates Foederatae Americae
Low Saxon/Low German:
Williamson County, Texas, USA
Macedonian:
Вилијамсон, Тексас, Соединети Американски Држави
Min Dong Chinese:
Williamson Gông, Texas
Minnan / Hokkien-Taiwanese:
Williamson Kūn
Norwegian:
Williamson County, Texas, USA
Polish:
Hrabstwo Williamson, Teksas, Stany Zjednoczone
Portuguese:
Condado de Williamson, Texas, Estados Unidos
Romanian:
Comitatul Williamson, Texas, Statele Unite ale Americii
Sardinian:
contea de Williamson, Texas, Istados Unidos de Amèrica
Serbian:
Округ Вилијамсон, Тексас, Сједињене Америчке Државе
Serbo-Croatian:
Williamson County, Texas, Sjedinjene Američke Države
Swedish:
Williamson County, Texas, USA
Traditional Chinese:
威廉森縣, 德薩斯州, 美國
Turkish:
Williamson County, Teksas, Amerika Birleşik Devletleri
Ukrainian:
Вільямсон, Техас, Сполучені Штати Америки
Urdu:
ولیمسن کاؤنٹی، ٹیکساس, ٹیکساس, ریاستہائے متحدہ امریکا
Vietnamese:
Quận Williamson, Texas, Chủng Quốc Hoa Kỳ
Waray:
Condado han Williamson, Texas, Estados Unidos
Western Punjabi:
ولیمسن کاؤنٹی، ٹیکساس, ٹیکساس, امریکہ


No description has been added for this locality. Can you add one?

Select Mineral List Type

Standard Detailed Strunz Dana 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

10 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and 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:

'Albite-Anorthite Series'
Reference: Lonsdale, J.T. (1927) The Florence Meteorite of Williamson County, Texas: American Mineralogist 12 (11):398-404. (Nov 1927).
Aragonite
Formula: CaCO3
Reference: personally collected - Bill Morgenstern
Calcite
Formula: CaCO3
Celestine
Formula: SrSO4
Reference: Rocks & Minerals (1991): 66(3): 196-224.
Chromite
Formula: Fe2+Cr3+2O4
Reference: Lonsdale, J.T. (1927) The Florence Meteorite of Williamson County, Texas: American Mineralogist 12 (11):398-404. (Nov 1927).
'Fayalite-Forsterite Series'
Description: Ave. composition (Fa17) places Florence within the H chondrite group (Mason, 1963).
Reference: Lonsdale, J.T. (1927) The Florence Meteorite of Williamson County, Texas: American Mineralogist 12 (11):398-404. (Nov 1927).; Mason, B.H. (1963) Olivine composition in chondrites. Geochimica et Cosmochimica Acta 27, 1011-1023.
Gold
Formula: Au
Reference: Garner,L.Edwin (2010) Mineral Resources and Mining :The Handbook of Texas Online
Iron
Formula: Fe
Reference: Lonsdale, J.T. (1927) The Florence Meteorite of Williamson County, Texas: American Mineralogist 12 (11):398-404. (Nov 1927).
Iron var: Kamacite
Formula: (Fe,Ni)
Reference: Lonsdale, J.T. (1927) The Florence Meteorite of Williamson County, Texas: American Mineralogist 12 (11):398-404. (Nov 1927).
Marcasite
Formula: FeS2
Reference: Bill Morgenstern - Collection
'Orthopyroxene Subgroup'
Reference: Keil, K. & Fredriksson, K. (1964) The Fe, Mg, and Ca Distribution in Coexisting Olivines and Rhombic Pyroxenes of Chondrites. Journal of Geophysical Research Atmospheres 69 (16): 3487-3515. (August 1964).
'Pyroxene Group'
Description: Pyroxenes are mostly Ca-poor, but diopside or another Ca-rich pyroxene may be present in small quantities.
Reference: Lonsdale, J.T. (1927) The Florence Meteorite of Williamson County, Texas: American Mineralogist 12 (11):398-404. (Nov 1927).
Quartz
Formula: SiO2
Quartz var: Chalcedony
Formula: SiO2
Reference: Bill Morgenstern - Collection
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Reference: Roselle M. girard (1964) Texas Rocks and Minerals : Bureau of Economic Geology Guidebook No.6
Taenite
Formula: (Fe,Ni)
Reference: Lonsdale, J.T. (1927) The Florence Meteorite of Williamson County, Texas: American Mineralogist 12 (11):398-404. (Nov 1927).
Troilite
Formula: FeS
Reference: Lonsdale, J.T. (1927) The Florence Meteorite of Williamson County, Texas: American Mineralogist 12 (11):398-404. (Nov 1927).

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Iron1.AE.05Fe
var: Kamacite1.AE.05(Fe,Ni)
Taenite1.AE.10(Fe,Ni)
Group 2 - Sulphides and Sulfosalts
Marcasite2.EB.10aFeS2
Troilite2.CC.10FeS
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Quartz4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Aragonite5.AB.15CaCO3
Calcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Celestine7.AD.35SrSO4
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Fayalite-Forsterite Series'-
'Orthopyroxene Subgroup'-
'Pyroxene Group'-
'Serpentine Subgroup'-D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Iron
var: Kamacite
1.1.11.1(Fe,Ni)
Taenite1.1.11.2(Fe,Ni)
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Troilite2.8.9.1FeS
AmBnXp, with (m+n):p = 1:2
Marcasite2.12.2.1FeS2
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Celestine28.3.1.2SrSO4
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Albite-Anorthite Series'-
Aragonite-CaCO3
'Fayalite-Forsterite Series'-
Iron-Fe
'Orthopyroxene Subgroup'-
'Pyroxene Group'-
Quartz
var: Chalcedony
-SiO2
'Serpentine Subgroup'-D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn

List of minerals for each chemical element

HHydrogen
H Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
CCarbon
C AragoniteCaCO3
C CalciteCaCO3
OOxygen
O CelestineSrSO4
O AragoniteCaCO3
O CalciteCaCO3
O QuartzSiO2
O Quartz (var: Chalcedony)SiO2
O ChromiteFe2+Cr23+O4
O Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
MgMagnesium
Mg Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
AlAluminium
Al Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
SiSilicon
Si QuartzSiO2
Si Quartz (var: Chalcedony)SiO2
Si Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
SSulfur
S CelestineSrSO4
S MarcasiteFeS2
S TroiliteFeS
CaCalcium
Ca AragoniteCaCO3
Ca CalciteCaCO3
CrChromium
Cr ChromiteFe2+Cr23+O4
MnManganese
Mn Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe MarcasiteFeS2
Fe ChromiteFe2+Cr23+O4
Fe Iron (var: Kamacite)(Fe,Ni)
Fe Taenite(Fe,Ni)
Fe TroiliteFeS
Fe IronFe
Fe Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
NiNickel
Ni Iron (var: Kamacite)(Fe,Ni)
Ni Taenite(Fe,Ni)
Ni Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
ZnZinc
Zn Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
SrStrontium
Sr CelestineSrSO4
AuGold
Au GoldAu

Fossils

There are 19 fossil localities from the PaleoBioDB database within this region.

BETA TEST - These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.

Occurrences74
Youngest Fossil Listed0.01 Ma (Pleistocene)
Oldest Fossil Listed145 Ma (Late Jurassic)
Stratigraphic UnitsClick here to view 14 stratigraphic units.
Fossils from RegionClick here to show the list.
Accepted NameHierarchy Age
Anchura
genus
Animalia : Mollusca : Gastropoda : Littorinimorpha : Aporrhaidae : Anchura72.1 - 66 Ma
Late Cretaceous
Turritella
genus
Animalia : Mollusca : Gastropoda : Turritellidae : Turritella66 - 59.2 Ma
Paleocene
Cancellaria
genus
Animalia : Mollusca : Gastropoda : Neogastropoda : Cancellariidae : Cancellaria66 - 59.2 Ma
Paleocene
Ringicula
genus
Animalia : Mollusca : Gastropoda : Cephalaspidea : Ringiculidae : Ringicula72.1 - 66 Ma
Late Cretaceous
Tornatellaea
genus
Animalia : Mollusca : Gastropoda : Cephalaspidea : Acteonidae : Tornatellaea66 - 59.2 Ma
Paleocene
Architectonica
genus
Animalia : Mollusca : Gastropoda : Architectonicidae : Architectonica66 - 59.2 Ma
Paleocene
Ptycheulimella
genus
Animalia : Mollusca : Gastropoda : Pyramidellidae : Ptycheulimella66 - 59.2 Ma
Paleocene
Cucullaea
genus
Animalia : Mollusca : Bivalvia : Arcida : Cucullaeidae : Cucullaea66 - 59.2 Ma
Paleocene
Kelliella
genus
Animalia : Mollusca : Bivalvia : Venerida : Kelliellidae : Kelliella66 - 61.6 Ma
Paleocene
Siliqua
genus
Animalia : Mollusca : Bivalvia : Adapedonta : Pharidae : Siliqua66 - 59.2 Ma
Paleocene
Terebratulina
genus
Animalia : Brachiopoda : Rhynchonellata : Terebratulida : Cancellothyrididae : Terebratulina72.1 - 66 Ma
Late Cretaceous
Theropoda
unranked clade
Animalia : Chordata : Saurischia : Theropoda113 - 100.5 Ma
Early Cretaceous
Myotis
genus
Animalia : Chordata : Mammalia : Chiroptera : Vespertilionidae : Myotis0.126 - 0.0117 Ma
Pleistocene
Neotoma
genus
Animalia : Chordata : Mammalia : Rodentia : Cricetidae : Neotoma0.126 - 0.0117 Ma
Pleistocene
Sylvilagus
genus
Animalia : Chordata : Mammalia : Lagomorpha : Leporidae : Sylvilagus0.126 - 0.0117 Ma
Pleistocene
Camelops
genus
Animalia : Chordata : Mammalia : Artiodactyla : Camelidae : Camelops0.126 - 0.0117 Ma
Pleistocene
Proboscidea
order
Animalia : Chordata : Mammalia : Proboscidea0.126 - 0.0117 Ma
Pleistocene
Cynomys ludovicianus
species
Animalia : Chordata : Mammalia : Rodentia : Sciuridae : Cynomys : Cynomys ludovicianus0.126 - 0.0117 Ma
Pleistocene
Canis dirus
species
Animalia : Chordata : Mammalia : Carnivora : Canidae : Canis : Canis dirus0.126 - 0.0117 Ma
Pleistocene
Canis latrans
species
Animalia : Chordata : Mammalia : Carnivora : Canidae : Canis : Canis latrans0.126 - 0.0117 Ma
Pleistocene
Panthera onca
species
Animalia : Chordata : Mammalia : Carnivora : Felidae : Panthera : Panthera onca0.126 - 0.0117 Ma
Pleistocene
Lynx rufus
species
Animalia : Chordata : Mammalia : Carnivora : Felidae : Lynx : Lynx rufus0.126 - 0.0117 Ma
Pleistocene
Platygonus compressus
species
Animalia : Chordata : Mammalia : Artiodactyla : Tayassuidae : Platygonus : Platygonus compressus0.126 - 0.0117 Ma
Pleistocene
Grallatoridae
family
Animalia : Chordata : Saurischia : Grallatoridae113 - 100.5 Ma
Early Cretaceous
Brontopodus birdi
species
Animalia : Chordata : Saurischia : Brontopodus : Brontopodus birdi113 - 100.5 Ma
Early Cretaceous
Corbula (Caryocorbula)
subgenus
Animalia : Mollusca : Bivalvia : Pholadida : Corbulidae : Corbula : Corbula (Caryocorbula)66 - 59.2 Ma
Paleocene
Venericardia (Baluchicardia) bulla
species
Animalia : Mollusca : Bivalvia : Carditida : Carditidae : Baluchicardia : Venericardia (Baluchicardia) bulla66 - 59.2 Ma
Paleocene
Agaronia
genus
Animalia : Mollusca : Gastropoda : Neogastropoda : Olivellidae : Agaronia66 - 59.2 Ma
Paleocene
Ledina smirna
species
Animalia : Mollusca : Bivalvia : Nuculanida : Nuculanidae : Ledina : Ledina smirna66 - 59.2 Ma
Paleocene
Stoliczkaia (Lamnayella) scotti
species
Animalia : Mollusca : Cephalopoda : Ammonitida : Lyelliceratidae : Stoliczkaiella : Stoliczkaia (Lamnayella) scotti99.6 - 93.5 Ma
Late Cretaceous
Drepanochilus
genus
Animalia : Mollusca : Gastropoda : Littorinimorpha : Aporrhaidae : Drepanochilus72.1 - 66 Ma
Late Cretaceous
Wadeopsammia nodosa
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Dendrophylliidae : Wadeopsammia : Wadeopsammia nodosa72.1 - 66 Ma
Late Cretaceous
Caryophyllia konincki
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Caryophylliidae : Caryophyllia : Caryophyllia konincki72.1 - 66 Ma
Late Cretaceous
Caryophyllia mediavia
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Caryophylliidae : Caryophyllia : Caryophyllia mediavia66 - 61.6 Ma
Paleocene
Micrabacia radiata
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Micrabaciidae : Micrabacia : Micrabacia radiata83.6 - 72.1 Ma
Late Cretaceous
Flabellum conoideum
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Flabellidae : Flabellum : Flabellum conoideum66 - 59.2 Ma
Paleocene
Neophlycticeras (Neophlycticeras) texanum
species
Animalia : Mollusca : Cephalopoda : Ammonitida : Lyelliceratidae : Neophlycticeras : Neophlycticeras (Neophlycticeras) texanum99.6 - 93.5 Ma
Late Cretaceous
Stoliczkaia (Faraudiella) roemeri
species
Animalia : Mollusca : Cephalopoda : Ammonitida : Lyelliceratidae : Neophlycticeras : Stoliczkaia (Faraudiella) roemeri99.6 - 93.5 Ma
Late Cretaceous
Stoliczkaia (Faraudiella) archerae
species
Animalia : Mollusca : Cephalopoda : Ammonitida : Lyelliceratidae : Neophlycticeras : Stoliczkaia (Faraudiella) archerae99.6 - 93.5 Ma
Late Cretaceous
Budaiceras hyatti
species
Animalia : Mollusca : Cephalopoda : Ammonitida : Lyelliceratidae : Budaiceras : Budaiceras hyatti99.6 - 93.5 Ma
Late Cretaceous
Budaiceras elegantior
species
Animalia : Mollusca : Cephalopoda : Ammonitida : Lyelliceratidae : Budaiceras : Budaiceras elegantior99.6 - 93.5 Ma
Late Cretaceous
Actinastrea guadalupae
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Actinastreidae : Actinastrea : Actinastrea guadalupae109 - 105.3 Ma
Early Cretaceous
Thamnasteria hoffmeisteri
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Thamnasteriidae : Thamnasteria : Thamnasteria hoffmeisteri100.5 - 93.9 Ma
Late Cretaceous
Trochocyathus coloradoensis
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Caryophylliidae : Trochocyathus : Trochocyathus coloradoensis66 - 59.2 Ma
Paleocene
Caryophyllia constricta
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Caryophylliidae : Caryophyllia : Caryophyllia constricta66 - 59.2 Ma
Paleocene
Palaeastacus walkeri
species
Animalia : Arthropoda : Malacostraca : Decapoda : Erymidae : Palaeastacus : Palaeastacus walkeri145 - 100.5 Ma
Early Cretaceous
Placotrochus texanus
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Flabellidae : Placotrochus : Placotrochus texanus100.5 - 93.9 Ma
Late Cretaceous
Axosmilia craginiana
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Axosmiliidae : Axosmilia : Axosmilia craginiana109 - 105.3 Ma
Early Cretaceous
Pleurosmilia saxifisi
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Amphiastraeidae : Pleurosmilia : Pleurosmilia saxifisi100.5 - 93.9 Ma
Late Cretaceous
Budaia travisensis
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Amphiastraeidae : Budaia : Budaia travisensis100.5 - 93.9 Ma
Late Cretaceous
Stephanomorpha saxirotundi
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Siderastreidae : Stephanomorpha : Stephanomorpha saxirotundi100.5 - 93.9 Ma
Late Cretaceous
Epistreptophyllum budaensis
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Dermosmiliidae : Epistreptophyllum : Epistreptophyllum budaensis100.5 - 93.9 Ma
Late Cretaceous
Epistreptophyllum boesei
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Dermosmiliidae : Epistreptophyllum : Epistreptophyllum boesei109 - 105.3 Ma
Early Cretaceous
Epistreptophyllum shumardi
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Dermosmiliidae : Epistreptophyllum : Epistreptophyllum shumardi109 - 105.3 Ma
Early Cretaceous
Areopsammia bakerae
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Dendrophylliidae : Areopsammia : Areopsammia bakerae100.5 - 93.9 Ma
Late Cretaceous
Dimorpharaea manchacaensis
species
Animalia : Cnidaria : Anthozoa : Scleractinia : Microsolenidae : Dimorpharaea : Dimorpharaea manchacaensis100.5 - 93.9 Ma
Late Cretaceous
Palaega williamsonensis
species
Animalia : Arthropoda : Malacostraca : Isopoda : Cirolanidae : Palaega : Palaega williamsonensis100.5 - 66 Ma
Late Cretaceous
Goniopygus zitteli
species
Animalia : Echinodermata : Echinoidea : Arbacioida : Acropeltidae : Goniopygus : Goniopygus zitteli109 - 105.3 Ma
Early Cretaceous
Diplopodia taffi
species
Animalia : Echinodermata : Echinoidea : Pseudodiadematidae : Diplopodia : Diplopodia taffi145 - 66 Ma
Cretaceous
Fossil LocalitiesClick to show 19 fossil localities

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Williamson_County,_Texas
Wikidata ID:Q112686
GeoNames ID:4742143

Localities in this Region

Other Regions, Features and Areas that Intersect

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.
 
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