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Armstrong County, Texas, USA i
Regional Level Types
Armstrong County County
Texas State
USA Country

Regional Level Types
Armstrong County	County
Texas	State
USA	Country

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Palo Duro Canyon

Palo Duro Canyon area, Armstrong County, Texas, USA

Palo Duro Canyon

Palo Duro Canyon area, Armstrong County, Texas, USA

Palo Duro Canyon Stratigraphy

Palo Duro Canyon area, Armstrong County, Texas, USA

Palo Duro Canyon

Palo Duro Canyon area, Armstrong County, Texas, USA

Palo Duro Canyon

Palo Duro Canyon area, Armstrong County, Texas, USA

Palo Duro Canyon Stratigraphy

Palo Duro Canyon area, Armstrong County, Texas, USA

Palo Duro Canyon

Palo Duro Canyon area, Armstrong County, Texas, USA

Palo Duro Canyon

Palo Duro Canyon area, Armstrong County, Texas, USA

Neighbouring regions:

Potter County, Texas, USA

Randall County, Texas, USA

Swisher Co, Texas, USA

Swisher County, Texas, USA

Briscoe County, Texas, USA

Donley County, Texas, USA

Carson County, Texas, USA

Gray County, Texas, USA

Type:

County

Largest Settlements:

Place	Population
Claude	1,224 (2017)

Mindat Locality ID:

41771

Long-form identifier:

mindat:1:2:41771:7

GUID (UUID V4):

Other Languages:

View 39 more...

French:

comté d'Armstrong, Texas, États-Unis

German:

Armstrong County, Texas, Vereinigte Staaten

Italian:

contea di Armstrong, Texas, Stati Uniti d'America

Russian:

Армстронг, Техас, Соединённые Штаты Америки

Simplified Chinese:

阿姆斯特朗縣, 德克萨斯州, 美国

Spanish:

Condado de Armstrong, Texas, Estados Unidos

Albanian:

Armstrong County, Texas, Shtetet e Bashkuara të Amerikës

Arabic:

مقاطعة آرمسترونغ, تكساس, الولايات المتحدة

Armenian:

Արմստրոնգ շրջան, Տեխաս, Ամերիկայի Միացյալ Նահանգներ

Basque:

Armstrong konderria , Texas

Bavarian:

Armstrong County, Texas, Vaoanigte Stootn

Bishnupriya Manipuri:

আর্মস্ট্রং কাউন্টি, টেক্সাস, তিলপারাষ্ট্র

Bulgarian:

Армстронг, Тексас, Съединени американски щати

Cebuano:

Armstrong County , Texas

Czech:

Armstrong County, Texas, Spojené státy americké

Danish:

Armstrong County, Texas, USA

Dutch:

Armstrong County, Texas, Verenigde Staten

Estonian:

Armstrongi maakond , Texas, Ameerika Ühendriigid

Farsi/Persian:

شهرستان آرمسترانگ، تگزاس, تگزاس, ایالات متحده آمریکا

Georgian:

არმსტრონგის ოლქი, ტეხასი, ამერიკის შეერთებული შტატები

Hungarian:

Armstrong megye, Texas, Amerikai Egyesült Államok

Indonesian:

County Armstrong, Texas, Amerika Serikat

Irish Gaelic:

Contae Armstrong, Texas, Stáit Aontaithe Mheiriceá

Japanese:

アームストロング郡, テキサス州, アメリカ合衆国

Latin:

Armstrong Comitatus, Texia, Civitates Foederatae Americae

Low Saxon/Low German:

Armstrong County, Texas, USA

Min Dong Chinese:

Armstrong Gông, Texas

Minnan / Hokkien-Taiwanese:

Armstrong Kūn

Norwegian:

Armstrong County, Texas, USA

Polish:

Hrabstwo Armstrong, Teksas, Stany Zjednoczone

Portuguese:

Condado de Armstrong, Texas, Estados Unidos

Romanian:

Comitatul Armstrong, Texas, Statele Unite ale Americii

Sardinian:

contea de Armstrong, Texas, Istados Unidos de Amèrica

Scottish Gaelic:

Armstrong County, Texas, Na Stàitean Aonaichte

Serbian:

Округ Армстронг, Тексас, Сједињене Америчке Државе

Serbo-Croatian:

Armstrong County, Texas, Sjedinjene Američke Države

Slovak:

Armstrong County, Texas, Spojené štáty

Swedish:

Armstrong County, Texas, USA

Traditional Chinese:

岩士唐縣, 德薩斯州, 美國

Turkish:

Armstrong, Teksas, Amerika Birleşik Devletleri

Ukrainian:

Армстронг, Техас, Сполучені Штати Америки

Urdu:

آرمسٹرانگ کاؤنٹی، ٹیکساس, ٹیکساس, ریاستہائے متحدہ امریکا

Vietnamese:

Quận Armstrong, Texas, Chủng Quốc Hoa Kỳ

Waray:

Condado han Armstrong, Texas, Estados Unidos

Western Punjabi:

آرمسٹرانگ کاؤنٹی, ٹیکساس, امریکہ

A county.

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.

ⓘ Diatomite

Mineral List

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

17 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

ⓘ Diatomite

ⓘ 'EL6/7 chondrite meteorite'

Detailed Mineral List:

ⓘ Albite

Formula: Na(AlSi₃O₈)

Locality: Happy Canyon meteorite, Armstrong County, Texas, USA

Description: The Plagioclase is oligoclase (An 26), higher than the An≤20 usually found in Enstatite Chondrites.

References:

Olsen, E. J., Bunch, T. E., Jarosewich, E., Noonan, A. F. & Huss, G. I. (1977) Meteoritics 12 (2), 109-123. (June 1977)

ⓘ Albite var. Oligoclase

Formula: (Na,Ca)[Al(Si,Al)Si₂O₈]

Locality: Happy Canyon meteorite, Armstrong County, Texas, USA

Description: The Plagioclase is oligoclase (An 26), higher than the An≤20 usually found in Enstatite Chondrites.

References:

Olsen, E. J., Bunch, T. E., Jarosewich, E., Noonan, A. F. & Huss, G. I. (1977) Meteoritics 12 (2), 109-123. (June 1977)

ⓘ Aragonite

Formula: CaCO₃

Locality: Palo Duro Canyon area, Armstrong County, Texas, USA

References:

Smith, Arthur E. (1991) Texas Mineral Locality Index. Rocks & Minerals, 66 (3) 196-224 doi:10.1080/00357529.1991.11761622

ⓘ Baryte

Formula: BaSO₄

Locality: Palo Duro Canyon area, Armstrong County, Texas, USA

References:

Rylan Lopez CollectionIdentified by Rylan Lopez: Visual Identification, Inferred (explain how), Wet Chemical, Raman Spectroscopy

ⓘ Calcite

Formula: CaCO₃

Locality: Palo Duro Canyon area, Armstrong County, Texas, USA

References:

Rocks & Min. (1963) 38:581

ⓘ Celestine

Formula: SrSO₄

Locality: Palo Duro Canyon area, Armstrong County, Texas, USA

References:

Smith, Arthur E. (1991) Texas Mineral Locality Index. Rocks & Minerals, 66 (3) 196-224 doi:10.1080/00357529.1991.11761622

ⓘ Clinoenstatite

Formula: MgSiO₃

Locality: Happy Canyon meteorite, Armstrong County, Texas, USA

Description: Clinoenstatite with extinction angles up to 11 degrees accounts for about 1% of the Enstatite

References:

Olsen, E. J., Bunch, T. E., Jarosewich, E., Noonan, A. F. & Huss, G. I. (1977) Meteoritics 12 (2), 109-123. (June 1977)

ⓘ Diopside

Formula: CaMgSi₂O₆

Locality: Happy Canyon meteorite, Armstrong County, Texas, USA

References:

Olsen, E., Bunch, T., Jarosewich, E. & Huss, G. I. (1976) Happy Canyon: An E-7 enstatite chondrite (abstract), Meteoritics 11 (4): 348-349. (Dec 1976)

Watters, T. R. & Prinz, M (1979) Aubrites - Their origin and relationship to enstatite chondrites. In: Lunar and Planetary Science Conference, 10th, Houston, Tex., March 19-23, 1979, Proceedings. Volume 1. (A80-23557 08-91) New York, Pergamon Press, Inc., 1979, p. 1073-1093.

McCoyet al., (1995) Origin and history of impact-melt rocks of enstatite chondrite parentage, Geochimica et Cosmochimica Acta 59 (1):161-175. (Jan 1995)

ⓘ Dolomite

Formula: CaMg(CO₃)₂

Locality: Palo Duro Canyon area, Armstrong County, Texas, USA

References:

Rocks & Min. (1963) 38:581

ⓘ Enstatite

Formula: Mg₂Si₂O₆

Locality: Happy Canyon meteorite, Armstrong County, Texas, USA

Description: Fa 0.4% according to Olsen et al., (1976); McCoy et al.,(1995) find that the fine-grained lithology (30 vol% of the meteorite) consists of ~90% enstatite

References:

Olsen, E., Bunch, T., Jarosewich, E. & Huss, G. I. (1976) Happy Canyon: An E-7 enstatite chondrite (abstract), Meteoritics 11 (4): 348-349. (Dec 1976)

McCoyet al., (1995) Origin and history of impact-melt rocks of enstatite chondrite parentage, Geochimica et Cosmochimica Acta 59 (1):161-175. (Jan 1995)

ⓘ Gypsum

Formula: CaSO₄ · 2H₂O

Locality: Palo Duro Canyon area, Armstrong County, Texas, USA

References:

Smith, Arthur E. (1991) Texas Mineral Locality Index. Rocks & Minerals, 66 (3) 196-224 doi:10.1080/00357529.1991.11761622

ⓘ Halite

Formula: NaCl

References:

Darton, N.H.,(1921) Permian Salt Deposits of the South -Central United States :USGS Bulletion 715 -M

ⓘ 'Limonite'

References:

USGS National Geochemical Database:Rocks -File D159243

ⓘ Manganite

Formula: Mn³⁺O(OH)

Locality: Palo Duro Canyon area, Armstrong County, Texas, USA

Description: Reacts to hydrogen peroxide, slight paramagnetism, match with Raman and XRD.

References:

Rylan Lopez CollectionIdentified by Rylan Lopez: Visual Identification, Inferred (explain how), Wet Chemical, Raman Spectroscopy

ⓘ Opal

Formula: SiO₂ · nH₂O

Locality: Diatomite deposit (MRDS 10276028), Armstrong County, Texas, USA

References:

U.S Geological Survey, Reston, Virginia

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

ⓘ Osbornite

Formula: TiN

Locality: Happy Canyon meteorite, Armstrong County, Texas, USA

References:

McCoyet al., (1995) Origin and history of impact-melt rocks of enstatite chondrite parentage, Geochimica et Cosmochimica Acta 59 (1):161-175. (Jan 1995)

ⓘ 'Petrified Wood'

Locality: Palo Duro Canyon area, Armstrong County, Texas, USA

References:

Smith, Arthur E. (1991) Texas Mineral Locality Index. Rocks & Minerals, 66 (3) 196-224 doi:10.1080/00357529.1991.11761622

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

Locality: Happy Canyon meteorite, Armstrong County, Texas, USA

Description: Plagioclase in the predominant coarse-grained litholgy is albitic (An14), but in the fine-grained lithology the anorthositic component is unusually high for Enstatite chondrites (An25)[McCoy et al.,1995]

References:

McCoyet al., (1995) Origin and history of impact-melt rocks of enstatite chondrite parentage, Geochimica et Cosmochimica Acta 59 (1):161-175. (Jan 1995)

ⓘ Pyrolusite

Formula: Mn⁴⁺O₂

Locality: Palo Duro Canyon area, Armstrong County, Texas, USA

References:

Rylan Lopez CollectionIdentified by Rylan Lopez: Visual Identification, Inferred (explain how), Wet Chemical, Raman Spectroscopy

ⓘ 'Silica'

Locality: Happy Canyon meteorite, Armstrong County, Texas, USA

References:

Boesenberg, J. S., Weisberg, M. K., Greenwood, R. C., Gibson, J. M. & Franchi, I. A. (2014) The Anomalous Enstatite Meteorites — Part 2: The Recrystallized EL Meteorites, Lunar and Planetary Science Conference XXXXV. LPI Contribution No. 1777, p.1486. (March 2014)

ⓘ Taenite

Formula: (Ni,Fe)

Locality: Happy Canyon meteorite, Armstrong County, Texas, USA

References:

ⓘ Troilite

Formula: FeS

Locality: Happy Canyon meteorite, Armstrong County, Texas, USA

References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Taenite	1.AE.10	(Ni,Fe)
ⓘ	Osbornite	1.BC.15	TiN
Group 2 - Sulphides and Sulfosalts
ⓘ	Troilite	2.CC.10	FeS
Group 3 - Halides
ⓘ	Halite	3.AA.20	NaCl
Group 4 - Oxides and Hydroxides
ⓘ	Opal	4.DA.10	SiO₂ · nH₂O
ⓘ	Pyrolusite	4.DB.05	Mn⁴⁺O₂
ⓘ	Manganite	4.FD.15	Mn³⁺O(OH)
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	Dolomite	5.AB.10	CaMg(CO₃)₂
ⓘ	Aragonite	5.AB.15	CaCO₃
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Baryte	7.AD.35	BaSO₄
ⓘ	Celestine	7.AD.35	SrSO₄
ⓘ	Gypsum	7.CD.40	CaSO₄ · 2H₂O
Group 9 - Silicates
ⓘ	Enstatite	9.DA.05	Mg₂Si₂O₆
ⓘ	Clinoenstatite	9.DA.10	MgSiO₃
ⓘ	Diopside	9.DA.15	CaMgSi₂O₆
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
ⓘ	var. Oligoclase	9.FA.35	(Na,Ca)[Al(Si,Al)Si₂O₈]
Unclassified
ⓘ	'Limonite'	-
ⓘ	'Petrified Wood'	-
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'Silica'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Gypsum	CaSO₄ · 2H₂O
H	ⓘ Manganite	Mn³⁺O(OH)
H	ⓘ Opal	SiO₂ · nH₂O
C	Carbon
C	ⓘ Aragonite	CaCO₃
C	ⓘ Calcite	CaCO₃
C	ⓘ Dolomite	CaMg(CO₃)₂
N	Nitrogen
N	ⓘ Osbornite	TiN
O	Oxygen
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Aragonite	CaCO₃
O	ⓘ Baryte	BaSO₄
O	ⓘ Calcite	CaCO₃
O	ⓘ Celestine	SrSO₄
O	ⓘ Clinoenstatite	MgSiO₃
O	ⓘ Diopside	CaMgSi₂O₆
O	ⓘ Dolomite	CaMg(CO₃)₂
O	ⓘ Enstatite	Mg₂Si₂O₆
O	ⓘ Gypsum	CaSO₄ · 2H₂O
O	ⓘ Manganite	Mn³⁺O(OH)
O	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
O	ⓘ Opal	SiO₂ · nH₂O
O	ⓘ Pyrolusite	Mn⁴⁺O₂
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Na	Sodium
Na	ⓘ Albite	Na(AlSi₃O₈)
Na	ⓘ Halite	NaCl
Na	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Mg	Magnesium
Mg	ⓘ Clinoenstatite	MgSiO₃
Mg	ⓘ Diopside	CaMgSi₂O₆
Mg	ⓘ Dolomite	CaMg(CO₃)₂
Mg	ⓘ Enstatite	Mg₂Si₂O₆
Al	Aluminium
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	Silicon
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Clinoenstatite	MgSiO₃
Si	ⓘ Diopside	CaMgSi₂O₆
Si	ⓘ Enstatite	Mg₂Si₂O₆
Si	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Si	ⓘ Opal	SiO₂ · nH₂O
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
S	Sulfur
S	ⓘ Baryte	BaSO₄
S	ⓘ Celestine	SrSO₄
S	ⓘ Gypsum	CaSO₄ · 2H₂O
S	ⓘ Troilite	FeS
Cl	Chlorine
Cl	ⓘ Halite	NaCl
Ca	Calcium
Ca	ⓘ Aragonite	CaCO₃
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Diopside	CaMgSi₂O₆
Ca	ⓘ Dolomite	CaMg(CO₃)₂
Ca	ⓘ Gypsum	CaSO₄ · 2H₂O
Ca	ⓘ Albite var. Oligoclase	(Na,Ca)[Al(Si,Al)Si₂O₈]
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ti	Titanium
Ti	ⓘ Osbornite	TiN
Mn	Manganese
Mn	ⓘ Manganite	Mn³⁺O(OH)
Mn	ⓘ Pyrolusite	Mn⁴⁺O₂
Fe	Iron
Fe	ⓘ Taenite	(Ni,Fe)
Fe	ⓘ Troilite	FeS
Ni	Nickel
Ni	ⓘ Taenite	(Ni,Fe)
Sr	Strontium
Sr	ⓘ Celestine	SrSO₄
Ba	Barium
Ba	ⓘ Baryte	BaSO₄

Fossils

There are 23 fossil localities from the PaleoBioDB database within this region.

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.

Occurrences

Youngest Fossil Listed

4.90 Ma (Pliocene)

Oldest Fossil Listed

10.3 Ma (Miocene)

Stratigraphic Units

Unit	No. Occurrences	Age
Goodnight Beds	10	10.3 - 4.9 Ma (Neogene)

Fossils from Region

Click here to show the list.

Accepted Name	Hierarchy	Age
Felidae family	Animalia : Chordata : Mammalia : Carnivora : Felidae	10.3 - 4.9 Ma Neogene
Hemiauchenia genus	Animalia : Chordata : Mammalia : Artiodactyla : Camelidae : *Hemiauchenia*	10.3 - 4.9 Ma Neogene
Megatylopus genus	Animalia : Chordata : Mammalia : Artiodactyla : Camelidae : *Megatylopus*	10.3 - 4.9 Ma Neogene
Antilocapridae family	Animalia : Chordata : Mammalia : Artiodactyla : Antilocapridae	10.3 - 4.9 Ma Neogene
Hexobelomeryx genus	Animalia : Chordata : Mammalia : Artiodactyla : Antilocapridae : *Hexobelomeryx*	10.3 - 4.9 Ma Neogene
Rhynchotherium genus	Animalia : Chordata : Mammalia : Proboscidea : Gomphotheriidae : *Rhynchotherium*	10.3 - 4.9 Ma Neogene
Aphelops mutilus species	Animalia : Chordata : Mammalia : Perissodactyla : Rhinocerotidae : Aphelops : *Aphelops mutilus*	10.3 - 4.9 Ma Neogene
Borophagus secundus species	Animalia : Chordata : Mammalia : Carnivora : Canidae : Borophagus : *Borophagus secundus*	10.3 - 4.9 Ma Neogene
Neohipparion eurystyle species	Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Neohipparion : *Neohipparion eurystyle*	10.3 - 4.9 Ma Neogene
Protohippus perditus species	Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Protohippus : *Protohippus perditus*	10.3 - 4.9 Ma Neogene
Dinohippus interpolatus species	Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Dinohippus : *Dinohippus interpolatus*	10.3 - 4.9 Ma Neogene
Pliohippus spectans species	Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Pliohippus : *Pliohippus spectans*	10.3 - 4.9 Ma Neogene
Cormohipparion ingenuum species	Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Cormohipparion : *Cormohipparion ingenuum*	10.3 - 4.9 Ma Neogene
Borophagus hilli species	Animalia : Chordata : Mammalia : Carnivora : Canidae : Borophagus : *Borophagus hilli*	10.3 - 4.9 Ma Neogene
Pediomeryx hemphillensis species	Animalia : Chordata : Mammalia : Artiodactyla : Palaeomerycidae : Pediomeryx : *Pediomeryx hemphillensis*	10.3 - 4.9 Ma Neogene
Dinohippus mexicanus species	Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Dinohippus : *Dinohippus mexicanus*	10.3 - 4.9 Ma Neogene
Astrohippus stockii species	Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Astrohippus : *Astrohippus stockii*	10.3 - 4.9 Ma Neogene
Astrohippus ansae species	Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Astrohippus : *Astrohippus ansae*	10.3 - 4.9 Ma Neogene
Vulpes stenognathus species	Animalia : Chordata : Mammalia : Carnivora : Canidae : Vulpes : *Vulpes stenognathus*	10.3 - 4.9 Ma Neogene
Caninae subfamily	Animalia : Chordata : Mammalia : Carnivora : Canidae : Caninae	10.3 - 4.9 Ma Neogene
Mephitini tribe	Animalia : Chordata : Mammalia : Carnivora : Mustelidae : Mephitini	10.3 - 4.9 Ma Neogene
Tayassuinae subfamily	Animalia : Chordata : Mammalia : Artiodactyla : Tayassuidae : Tayassuinae	10.3 - 4.9 Ma Neogene

Fossil Localities

Click to show 1 fossil locality

USA

Texas
- Armstrong County
  - Neogene🐚 Christian Ranch

Other Databases

Wikipedia:	https://en.wikipedia.org/wiki/Armstrong_County,_Texas
Wikidata ID:	Q107977
GeoNames ID:	5516441

Localities in this Region

USA

Texas
- Armstrong County

Other Regions, Features and Areas that Intersect

North AmericaContinent

North America PlateTectonic Plate

Mazatzal TerraneVolcanic Arc
Palo Duro BasinBasin
Shawnee DomainDomain

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

Darton,N.H.,(1921) Permian Salt Deposits of the South -Central United States :USGS Bulletin 715-M

Quick NavTop Commodities Mineral List Rock Types Fossils Other Databases Localities in Region Other Regions References

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Armstrong County, Texas, USAiRegional Level TypesArmstrong CountyCounty TexasState USACountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

Select Mineral List Type

Commodity List

Mineral List

Rock Types Recorded

Select Rock List Type

Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Fossils

Other Databases

Localities in this Region

Other Regions, Features and Areas that Intersect

References

Armstrong County, Texas, USA i
Regional Level Types
Armstrong County County
Texas State
USA Country