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:
Kenai Peninsula Borough, Alaska, USA

Oldest recorded age at locality: 190
Youngest recorded age at locality: 135

mindat Locality ID: 193760
mindat URL: http://www.mindat.org/loc-193760.html

Tectonic Settings:

Total number of sublocalities beneath "Kenai Peninsula Borough, Alaska, USA": 239
Total number of bottom-level sublocalities: 230

Number of Child Localities: 7
Child Localities:
Bristol Bay District
Homer District
Hope District
Kachemak Bay
Prince William Sound District
Redoubt District
Seward District

Latitude: 60°3'53"N
Longitude: 151°1'56"W
Decimal Degree (lat, lon): 60.064722222222,-151.03222222222

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.

Allophane	Amphibole	Aphthitalite	Arsenic	Arsenopyrite	Baryte	Calcite	Chalcopyrite	Clay	Clinozoisite
Copper	Corundum	Covellite	Epidote	Garnet	Gypsum	Malachite	Marcasite	Melonite	Mica
Molybdenite	Nickeline	None	Not in a structural group	Olivine	Pyrite	Pyroxene	Quartz	Rocksalt	Scheelite
Smectite-vermiculite	Sphalerite	Spinel	Stibnite	Tetrahedrite

Actinolite ()*	Anhydrite ()*	Ankerite ()*	Antimony ()*	Aphthitalite ()*
Arsenopyrite ()*	Augite ()*	Azurite ()*	Baryte ()*	Bornite ()*
Calcite ()*	Celadonite ()*	Chalcocite ()*	Chalcopyrite ()*	Chromite ()*
Chrysocolla ()*	Cinnabar ()*	Copper ()*	Covellite ()*	Epidote ()*
Forsterite ()*	Galena ()*	Gold ()*	Graphite ()*	Grossular ()*
Gypsum ()*	Hematite ()*	Magnetite ()*	Malachite ()*	Marcasite ()*
Molybdenite ()*	Montmorillonite ()*	Muscovite ()*	Pyrite ()*	Pyrrhotite ()*
Quartz ()*	Scheelite ()*	Silver ()*	Sphalerite ()*	Stibnite ()*
Sylvanite ()*	Tetrahedrite-(Zn) ()*	Tschermakite ()*

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 Ba C Ca Cr Cu Fe H Hg K Mg Mo Na O Pb S Sb Si Te W Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Allophane Amphibole Aphthitalite Arsenic Arsenopyrite Baryte Calcite Chalcopyrite Clay Clinozoisite
Copper Corundum Covellite Epidote Garnet Gypsum Malachite Marcasite Melonite Mica
Molybdenite Nickeline None Not in a structural group Olivine Pyrite Pyroxene Quartz Rocksalt Scheelite
Smectite-vermiculite Sphalerite Spinel Stibnite Tetrahedrite

43 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
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂			2	130633,130659	3419
Anhydrite ()*	Not in a structural group	Ca(SO₄)	190	190	3	130634,130636,130637	1588
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂			2	130543,130580	3092
Antimony ()*	Arsenic	Sb			1	130612	363
Aphthitalite ()*	Aphthitalite	K₃Na(SO₄)₂			1	130629	77
Arsenopyrite ()*	Arsenopyrite	FeAsS			83	130468,130469,130476,130480,130481,130482,130483,130484,130486,130489,130491,130492,130493,130494,130496,130502,130503,130506,130511,130513,130514,130516,130519,130520,130521,130523,130524,130526,130528,130529,130530,130531,130532,130533,130534,130537,130538,130539,130540,130541,130542,130543,130546,130548,130551,130553,130557,130560,130561,130562,130569,130571,130572,130573,130575,130580,130581,130585,130586,130587,130591,130592,130593,130594,130599,130602,130603,130604,130611,130616,130617,130618,130619,130625,130666,130673,130679,130680,130683,130684,130685,130688,130694	9052
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆			2	130691,130702	2060
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂			8	130602,130632,130633,130640,130656,130657,130659,130692	5509
Baryte ()*	Baryte	Ba(SO₄)	190	190	4	130634,130635,130636,130637	11547
Bornite ()*	None	Cu₅FeS₄			2	130638,130640	5516
Calcite ()*	Calcite	Ca(CO₃)	190	190	48	130489,130496,130506,130513,130514,130519,130520,130523,130526,130530,130531,130533,130538,130540,130542,130543,130546,130548,130553,130565,130568,130570,130571,130572,130573,130580,130583,130586,130591,130599,130604,130616,130617,130625,130627,130633,130634,130635,130636,130657,130659,130666,130677,130678,130683,130684,130689,130694	27770
Celadonite ()*	Mica Clay	KMgFe³⁺Si₄O₁₀(OH)₂	190	190	1	130636	309
Chalcocite ()*	None	Cu₂S			2	130492,130602	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	190	190	76	130467,130468,130469,130470,130471,130473,130484,130488,130489,130490,130493,130496,130512,130513,130514,130516,130530,130531,130534,130537,130540,130542,130543,130545,130546,130551,130553,130557,130573,130575,130581,130583,130585,130592,130593,130601,130602,130604,130606,130613,130625,130626,130627,130632,130633,130634,130636,130637,130638,130641,130656,130657,130659,130660,130664,130667,130671,130672,130676,130677,130679,130681,130683,130684,130685,130688,130689,130691,130692,130694,130696,130697,130699,130700,130701,130702	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	135	135	6	130487,130495,130497,130504,130623,130703	3902
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O			2	130633,130659	3531
Cinnabar ()*	None	HgS			1	130510	2600
Copper ()*	Copper	Cu			3	130496,130509,130557	3846
Covellite ()*	Covellite	CuS			1	130492	4165
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)			6	130632,130633,130657,130659,130667,130689	8173
Forsterite ()*	Olivine	Mg₂(SiO₄)			1	130623	1188
Galena ()*	Rocksalt	PbS	190	190	65	130468,130482,130483,130484,130486,130492,130496,130506,130512,130513,130514,130516,130519,130520,130523,130528,130529,130530,130531,130533,130537,130540,130542,130543,130546,130551,130553,130560,130562,130568,130571,130572,130573,130580,130581,130583,130585,130586,130587,130591,130592,130593,130594,130599,130602,130603,130604,130605,130613,130619,130636,130637,130653,130654,130664,130666,130679,130683,130684,130685,130686,130688,130694,130699,130700	24243
Gold ()*	Copper	Au	190	190	141	130476,130477,130478,130480,130481,130482,130483,130484,130485,130486,130488,130489,130491,130492,130494,130496,130502,130503,130506,130508,130509,130510,130511,130512,130513,130514,130515,130516,130518,130519,130521,130522,130523,130526,130527,130528,130529,130530,130531,130532,130533,130535,130536,130537,130538,130539,130540,130541,130542,130543,130544,130545,130546,130547,130548,130549,130551,130552,130553,130554,130555,130557,130558,130559,130560,130561,130562,130564,130565,130571,130572,130573,130574,130575,130577,130578,130579,130580,130581,130582,130583,130584,130585,130586,130587,130588,130589,130590,130591,130592,130593,130594,130595,130596,130597,130598,130599,130601,130602,130603,130604,130605,130606,130607,130608,130609,130610,130611,130612,130613,130616,130617,130618,130619,130620,130625,130626,130634,130635,130636,130637,130666,130668,130674,130675,130678,130679,130680,130682,130683,130684,130685,130686,130688,130690,130693,130694,130695,130697,130700,130704	30554
Graphite ()*	None	C			1	130501	2812
Grossular ()*	Garnet	Ca₃Al₂(SiO₄)₃			1	130623	1544
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O			1	130635	6890
Hematite ()*	Corundum	Fe₂O₃	190	190	3	130570,130636,130667	14640
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄			22	130521,130631,130632,130633,130638,130642,130644,130646,130647,130649,130650,130651,130656,130657,130658,130659,130660,130661,130662,130676,130691,130703	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂			12	130531,130569,130602,130632,130633,130638,130645,130656,130657,130659,130660,130692	12537
Marcasite ()*	Marcasite	FeS₂			2	130632,130671	5674
Molybdenite ()*	Molybdenite	MoS₂			10	130467,130472,130517,130530,130540,130640,130641,130654,130655,130664	5800
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O	190	190	1	130636	1508
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	190	190	6	130500,130557,130636,130637,130653,130664	17380
Pyrite ()*	Pyrite	FeS₂	190	190	101	130467,130468,130471,130476,130479,130480,130483,130484,130486,130488,130489,130491,130493,130494,130496,130500,130502,130503,130506,130511,130512,130513,130514,130516,130520,130524,130525,130526,130530,130532,130533,130534,130538,130540,130541,130542,130548,130550,130551,130553,130557,130560,130561,130562,130568,130569,130572,130573,130579,130581,130583,130585,130586,130587,130591,130592,130593,130594,130599,130601,130602,130605,130613,130625,130626,130627,130632,130633,130634,130635,130636,130637,130638,130641,130653,130654,130659,130660,130663,130664,130667,130670,130671,130672,130675,130676,130677,130679,130680,130681,130683,130684,130685,130686,130688,130689,130691,130694,130699,130701,130702	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈			23	130469,130493,130513,130514,130525,130530,130540,130550,130557,130568,130572,130573,130625,130626,130627,130632,130641,130670,130679,130683,130684,130697,130702	9056
Quartz ()*	Quartz	SiO₂	190	190	144	130467,130470,130471,130476,130477,130479,130480,130481,130482,130483,130484,130486,130488,130489,130490,130491,130492,130493,130494,130496,130498,130500,130502,130503,130506,130508,130511,130512,130513,130514,130516,130517,130519,130520,130523,130524,130525,130526,130528,130529,130530,130531,130532,130533,130534,130537,130538,130539,130540,130541,130542,130543,130544,130546,130547,130548,130550,130551,130553,130555,130556,130557,130560,130561,130562,130565,130566,130567,130568,130569,130570,130571,130572,130573,130575,130576,130577,130579,130580,130581,130583,130585,130586,130587,130591,130592,130593,130594,130596,130599,130601,130602,130603,130604,130605,130609,130610,130611,130613,130614,130616,130617,130618,130619,130625,130626,130627,130632,130633,130634,130635,130636,130640,130653,130654,130657,130658,130659,130660,130661,130664,130666,130667,130671,130673,130675,130676,130677,130678,130679,130680,130681,130683,130684,130685,130686,130688,130689,130693,130694,130697,130699,130700,130704	61156
Scheelite ()*	Scheelite	Ca(WO₄)			3	130545,130589,130606	4894
Silver ()*	Copper	Ag			2	130496,130509	5186
Sphalerite ()*	Sphalerite	ZnS	190	190	58	130467,130468,130469,130482,130484,130493,130496,130503,130512,130513,130514,130519,130523,130530,130531,130533,130537,130540,130542,130543,130546,130551,130553,130557,130562,130572,130573,130575,130581,130583,130585,130586,130592,130593,130594,130599,130603,130604,130613,130634,130635,130636,130637,130641,130653,130654,130663,130664,130666,130677,130679,130683,130684,130685,130688,130689,130694,130700	21482
Stibnite ()*	Stibnite	Sb₂S₃			4	130537,130550,130556,130573	3418
Sylvanite ()*	Melonite	AgAuTe₄			2	130483,130492	337
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃			1	130492	5317
Tschermakite ()*	Amphibole	Ca₂(Mg₃Al₂)(Si₆Al₂)O₂₂(OH)₂			1	130623	73

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
podchrome-00896	135	135	Late Jurassic-Cretaceous	Cr	198336	Kenai Chrome (Star No. 4; Chrome Queen Mine), Homer District, Kenai Peninsula Borough, Alaska, USA	Star No. 4	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00899	135	135	Late Jurassic-Cretaceous	Cr	198336	Kenai Chrome (Star No. 4; Chrome Queen Mine), Homer District, Kenai Peninsula Borough, Alaska, USA	Chrome Queen	Moiser et al. (2012)	USGSSIR2012_5157
vms-00993	190	190	Lower Jurassic	S	195712	Johnson River Prospect, Redoubt District, Kenai Peninsula Borough, Alaska, USA	Johnson River Prospect	Moiser et al. (2009)	USGSOFR2009_1034

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...