Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.

Locality Name:
Karnes Co., Texas, USA

Oldest recorded age at locality: 65.5
Youngest recorded age at locality: 2.6

mindat Locality ID: 29157
mindat URL: http://www.mindat.org/loc-29157.html

Tectonic Settings:

Total number of sublocalities beneath "Karnes Co., Texas, USA": 32
Total number of bottom-level sublocalities: 31

Number of Child Localities: 4
Child Localities:
Karnes Uranium District
Panna Maria East Mine
Panna Maria West Mine
Weddington - Tenneco Mine

Latitude: 28°55'18"N
Longitude: 98°1'7"W
Decimal Degree (lat, lon): 28.921666666667,-98.018611111111

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
	This mineral's age has not yet been recorded.

Alunite	Amorphous	Aragonite	Autunite	Baryte	Calcite	Clay	Corundum	Cristobalite	Fluorite
Fritzscheite	Gypsum	Marcasite	Meta-autunite	Molybdenite	None	Pyrite	Quartz	Rutile	Scheelite
Schoepite	Smectite-vermiculite	Sulphur	Zircon

Aragonite ()*	Autunite ()*	Baryte ()*	Calcite ()*	Carnotite ()*
Coffinite ()*	Cristobalite ()*	Gypsum ()*	Hematite ()*	Ilsemannite ()*
Iriginite ()*	Jarosite ()*	Jordisite ()*	Marcasite ()*	Meta-autunite ()*
Metatyuyamunite ()*	Molybdenite ()*	Montmorillonite ()*	Mourite ()*	Opal ()*
Powellite ()*	Pyrite ()*	Pyrolusite ()*	Quartz ()*	Schoepite ()*
Selenium ()*	Tyuyamunite ()*	Uraninite ()*	Uranophane-α ()*

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al Ba C Ca Fe H K Mg Mn Mo Na O P S Se Si U V

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Alunite Amorphous Aragonite Autunite Baryte Calcite Clay Corundum Cristobalite Fluorite
Fritzscheite Gypsum Marcasite Meta-autunite Molybdenite None Pyrite Quartz Rutile Scheelite
Schoepite Smectite-vermiculite Sulphur Zircon

29 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Aragonite ()*	Aragonite	Ca(CO₃)	65.5	2.6	1	270541	3250
Autunite ()*	Autunite	Ca(UO₂)₂(PO₄)₂·10-12H₂O	65.5	2.6	3	270513,270522,270532	1272
Baryte ()*	Baryte	Ba(SO₄)	65.5	2.6	3	270529,270539,270541	11547
Calcite ()*	Calcite	Ca(CO₃)	65.5	2.6	4	270529,270536,270539,270541	27770
Carnotite ()*	None	K₂(UO₂)₂(VO₄)₂·3H₂O	65.5	2.6	5	270513,270522,270532,270535,270539	1184
Coffinite ()*	Zircon	U(SiO₄)·nH₂O	65.5	2.6	4	270513,270529,270539,270544	566
Cristobalite ()*	Cristobalite	SiO₂	65.5	2.6	1	270517	453
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	65.5	2.6	5	270529,270532,270535,270539,270541	6890
Hematite ()*	Corundum	Fe₂O₃	65.5	2.6	1	270513	14640
Ilsemannite ()*	None	Mo₃O₈·nH₂O (?)	65.5	2.6	4	270513,270521,270522,270539	123
Iriginite ()*	None	(UO₂)Mo⁶⁺₂O₇·3H₂O	65.5	2.6	1	270522	15
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆	65.5	2.6	2	270513,270539	2228
Jordisite ()*	Amorphous	MoS₂	65.5	2.6	2	270521,270522	102
Marcasite ()*	Marcasite	FeS₂	65.5	2.6	3	270513,270529,270533	5674
Meta-autunite ()*	Meta-autunite	Ca(UO₂)₂(PO₄)₂·6H₂O	65.5	2.6	3	270513,270517,270539	388
Metatyuyamunite ()*	Fritzscheite	Ca(UO₂)₂(VO₄)₂·3H₂O	65.5	2.6	1	270517	129
Molybdenite ()*	Molybdenite	MoS₂	65.5	2.6	2	270513,270539	5800
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O	65.5	2.6	1	270517	1508
Mourite ()*	None	(UO₂)(Mo⁶⁺)₅O₁₆·5H₂O	65.5	2.6	2	270513,270539	2
Opal ()*	Amorphous	SiO₂·nH₂O	65.5	2.6	1	270513	2994
Powellite ()*	Scheelite	Ca(MoO₄)	65.5	2.6	3	270513,270524,270539	494
Pyrite ()*	Pyrite	FeS₂	65.5	2.6	7	270522,270529,270533,270536,270539,270542,270543	39462
Pyrolusite ()*	Rutile	MnO₂	65.5	2.6	1	270513	3106
Quartz ()*	Quartz	SiO₂	65.5	2.6	4	270518,270536,270539,270541	61156
Schoepite ()*	Schoepite	(UO₂)₄O(OH)₆(H₂O)₆	65.5	2.6	2	270513,270539	94
Selenium ()*	Sulphur	Se	65.5	2.6	2	270513,270539	143
Tyuyamunite ()*	None	Ca(UO₂)₂(VO₄)₂·5-8H₂O	65.5	2.6	4	270513,270522,270532,270539	628
Uraninite ()*	Fluorite	UO₂	65.5	2.6	3	270513,270532,270544	2718
Uranophane-α ()*	None	Ca(UO₂)₂(SiO₃OH)₂·5H₂O	65.5	2.6	2	270513,270539	890

1 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	Mo-00217	65.5	2.6										Molybdenite, Mourite, Powellite, Ilsemannite	Mo	27869	Karnes Uranium District, Karnes Co., Texas, USA		Reynolds and Goldhaber (1978); Reynolds et al. (1982)

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...