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:
Round Mountain, Round Mountain, Round Mountain District, Toquima Range, Nye Co., Nevada, USA

Oldest recorded age at locality: 99
Youngest recorded age at locality: 16.2

mindat Locality ID: 239004
mindat URL: http://www.mindat.org/loc-239004.html

Tectonic Settings:

Total number of sublocalities beneath "Round Mountain, Round Mountain, Round Mountain District, Toquima Range, Nye Co., Nevada, USA": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Round Mountain Mine (Round Mountain Gold Mine; Sunnyside Mine; Sphinx Glory Hole; Great Western Tunnel; Rattlesnake; Keane Vein; Los Gazabo Vein)

Latitude: 38°42'0"N
Longitude: 117°3'59"W
Decimal Degree (lat, lon): 38.7,-117.06638888889

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.

Acanthite	Alunite	Calcite	Clay	Copper	Corundum	Diaspore	Fluorite	Mica	None
Not in a structural group	Pyrite	Quartz	Rutile

Aguilarite ()*	Anatase ()*	Calcite ()*	Fluorite ()*	Goethite ()*
Gold ()*	Hematite ()*	Jarosite ()*	Muscovite ()*	Pyrite ()*
Pyrolusite ()*	Quartz ()*	Realgar ()*	Scorodite ()*

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: Ag Al As Au C Ca F Fe H K Mn O S Se Si Ti

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Acanthite Alunite Calcite Clay Copper Corundum Diaspore Fluorite Mica None
Not in a structural group Pyrite Quartz Rutile

14 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
Aguilarite ()*	Acanthite	Ag₄SeS	99	26	1	240376	87
Anatase ()*	Not in a structural group	TiO₂	99	26	1	240376	2162
Calcite ()*	Calcite	Ca(CO₃)	99	26	1	240376	27770
Fluorite ()*	Fluorite	CaF₂	99	26	1	240376	9617
Goethite ()*	Diaspore	FeO(OH)	99	26	1	240376	7437
Gold ()*	Copper	Au	26	26	1	240376	30554
Hematite ()*	Corundum	Fe₂O₃	99	26	1	240376	14640
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆	99	26	1	240376	2228
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	99	26	1	240376	17380
Pyrite ()*	Pyrite	FeS₂	99	26	1	240376	39462
Pyrolusite ()*	Rutile	MnO₂	99	26	1	240376	3106
Quartz ()*	Quartz	SiO₂	99	26	1	240376	61156
Realgar ()*	None	AsS	99	26	1	240376	712
Scorodite ()*	None	Fe³⁺(AsO₄)·2H₂O	99	26	1	240376	1153

37 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	Age from other Locality	Dated Mineral	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID
Kristen000222	27	24.8	25.9±1.1	fission track			zircon	DRS-74-266	Yes	Zircon		261556	Toquima Range, Nye Co., Nevada, USA	Toquima Range	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000240	23.4	21.4	22.4±1	fission track			zircon	DRS-80-60	Yes	Zircon		261556	Toquima Range, Nye Co., Nevada, USA	Toquima Range	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000241	24.6	19.8	22.2±2.4	fission track			apatite	DRS-80-60	Yes			261556	Toquima Range, Nye Co., Nevada, USA	Toquima Range	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000187	35.2	33.4	34.3±0.9	K-Ar			sanidine	DRS-67-99	Yes	Sanidine		24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000188	80.8	77.6	79.2±1.6	K-Ar			muscovite	DRS-67-122	Yes	Muscovite		24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000190	85.5	80.9	83.2±2.3	K-Ar			muscovite	DRS-73-36	Yes	Muscovite		24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000191	81	77.4	79.2±1.8	K-Ar			muscovite	DRS-73-38	Yes	Muscovite		24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000192	83	79.2	81.1±1.9	K-Ar			muscovite	DRS-73-45	Yes	Muscovite		24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000193	82.9	77.3	80.1±2.8	K-Ar			biotite	DRS-73-138	Yes			24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000194	35.6	33.2	34.4±1.2	K-Ar	hydrothermal alteration		sanidine	DRS-74-94	Yes	Sanidine		24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000195	40.9	39.3	40.1±0.8	K-Ar	radiogenic argon loss		muscovite	DRS-74-97B	Yes	Muscovite		24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000196	62.8	60.4	61.6±1.2	K-Ar	radiogenic argon loss		muscovite	DRS-74-102C	Yes	Muscovite		24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000197	37.2	34.8	36±1.2	K-Ar	hydrothermal alteration		biotite	DRS-74-113	Yes			24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000198	35.9	33.5	34.7±1.2	K-Ar			sanidine	DRS-74-113	Yes	Sanidine		24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000199	36.3	33.9	35.1±1.2	K-Ar	hydrothermal alteration		biotite	DRS-74-207	Yes			24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000200	37.7	35.3	36.5±1.2	K-Ar			biotite	DRS-74-229	Yes			24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000201	82.9	77.5	80.2±2.7	K-Ar	age of foliation		muscovite	DRS-74-259	Yes	Muscovite		24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000202	83.7	78.1	80.9±2.8	K-Ar	age of foliation		biotite	DRS-74-259	Yes			24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000203	79.4	76.4	77.9±1.5	K-Ar			muscovite	DRS-74-260B	Yes	Muscovite		24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000205	25.8	24.2	25±0.8	K-Ar			biotite	DRS-76-54	Yes			24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000220	30.1	23.1	26.6±3.5	fission track			apatite	DRS-68-102	Yes			24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000221	38	34.6	36.3±1.7	fission track	hydrothermal alteration		zircon	DRS-74-89A	Yes	Zircon		24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000231	37.7	34.5	36.1±1.6	fission track	formation age		zircon	DRS-79-20	Yes	Zircon		24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000232	39.7	35.1	37.4±2.3	fission track	formation age		zircon	DRS-79-20	Yes	Zircon		24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000233	38.2	34.2	36.2±2	fission track	formation age		sphene	DRS-79-20	Yes			24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000234	20.4	16.2	18.3±2.1	fission track	formation age		apatite	DRS-79-20	Yes			24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000237	46.7	42.1	44.4±2.3	fission track			zircon	DRS-80-38C	Yes	Zircon		24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000238	45.5	39.9	42.7±2.8	fission track			zircon	DRS-80-38C	Yes	Zircon		24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen000239	21.7	17.7	19.7±2	fission track			apatite	DRS-80-38C	Yes			24436	Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain District	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
Kristen001380	26	24.4	25.2±0.8	K-Ar	mineralization age	high	adularia	DRS-68-146	Yes		Au	239003	Round Mountain, Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain	Shawe et al. (1986)	10.2113/gsecongeo.81.2.388	EG81_388
AJES44_373-00015	26	26	26								Au	11587	Round Mountain Mine (Round Mountain Gold Mine; Sunnyside Mine; Sphinx Glory Hole; Great Western Tunnel; Rattlesnake; Keane Vein; Los Gazabo Vein), Round Mountain, Round Mountain, Round Mountain District, Toquima Range, Nye Co., Nevada, USA	Round Mountain	Sillitoe (1997)	10.1080/08120099708728318	AJES44_373
NAVDAT-117883	99	81	90±9					117883				11587	Round Mountain Mine (Round Mountain Gold Mine; Sunnyside Mine; Sphinx Glory Hole; Great Western Tunnel; Rattlesnake; Keane Vein; Los Gazabo Vein), Round Mountain, Round Mountain, Round Mountain District, Toquima Range, Nye Co., Nevada, USA		NAVDAT		NAVDAT
USGS-Rb-Sr-06799	92.9	86.3	89.6±3.3	Rb-Sr	age of intrusion		whole rock					11587	Round Mountain Mine (Round Mountain Gold Mine; Sunnyside Mine; Sphinx Glory Hole; Great Western Tunnel; Rattlesnake; Keane Vein; Los Gazabo Vein), Round Mountain, Round Mountain, Round Mountain District, Toquima Range, Nye Co., Nevada, USA		USGS-Rb-Sr		USGS-Rb-Sr
USGS-Rb-Sr-06800	92.9	86.3	89.6±3.3	Rb-Sr	age of intrusion		whole rock					11587	Round Mountain Mine (Round Mountain Gold Mine; Sunnyside Mine; Sphinx Glory Hole; Great Western Tunnel; Rattlesnake; Keane Vein; Los Gazabo Vein), Round Mountain, Round Mountain, Round Mountain District, Toquima Range, Nye Co., Nevada, USA		USGS-Rb-Sr		USGS-Rb-Sr
USGS-Rb-Sr-06801	92.9	86.3	89.6±3.3	Rb-Sr	age of intrusion		whole rock					11587	Round Mountain Mine (Round Mountain Gold Mine; Sunnyside Mine; Sphinx Glory Hole; Great Western Tunnel; Rattlesnake; Keane Vein; Los Gazabo Vein), Round Mountain, Round Mountain, Round Mountain District, Toquima Range, Nye Co., Nevada, USA		USGS-Rb-Sr		USGS-Rb-Sr
USGS-Rb-Sr-06802	92.9	86.3	89.6±3.3	Rb-Sr	age of intrusion		whole rock					11587	Round Mountain Mine (Round Mountain Gold Mine; Sunnyside Mine; Sphinx Glory Hole; Great Western Tunnel; Rattlesnake; Keane Vein; Los Gazabo Vein), Round Mountain, Round Mountain, Round Mountain District, Toquima Range, Nye Co., Nevada, USA		USGS-Rb-Sr		USGS-Rb-Sr
USGS-Rb-Sr-06803	92.9	86.3	89.6±3.3	Rb-Sr	age of intrusion		whole rock					11587	Round Mountain Mine (Round Mountain Gold Mine; Sunnyside Mine; Sphinx Glory Hole; Great Western Tunnel; Rattlesnake; Keane Vein; Los Gazabo Vein), Round Mountain, Round Mountain, Round Mountain District, Toquima Range, Nye Co., Nevada, USA		USGS-Rb-Sr		USGS-Rb-Sr

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...