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:
Juneau, Alaska, USA

Oldest recorded age at locality: 252
Youngest recorded age at locality: 201

mindat Locality ID: 23735
mindat URL: http://www.mindat.org/loc-23735.html

Tectonic Settings:

Total number of sublocalities beneath "Juneau, Alaska, USA": 221
Total number of bottom-level sublocalities: 214

Number of Child Localities: 7
Child Localities:
Admiralty District
Berners Bay District
Douglas Island
Glacier Bay District
Juneau
Juneau District
Petersburg District

Latitude: 58°17'7"N
Longitude: 134°30'26"W
Decimal Degree (lat, lon): 58.285277777778,-134.50722222222

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	Allargentum	Aragonite	Argyrodite	Arsenic	Arsenopyrite	Baryte	Calcite	Chalcopyrite	Clay
Clinozoisite	Copper	Corundum	Covellite	Epidote	Feldspar	Fluorite	Geocronite	Jalpaite	Malachite
Marcasite	Melonite	Mica	Molybdenite	Nickeline	None	Polybasite	Pyrite	Quartz	Rhodonite
Rocksalt	Rutile	Scheelite	Sphalerite	Spinel	Stibnite	Stilbite	Tetrahedrite	Titanite	Zircon

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 Bi C Ca Cu F Fe Ge H K Mg Mn Mo Na O Pb S Sb Si Sn Te Ti W Zn Zr

Elements from minerals reported directly at this locality: Al Ca H O Si

Structural Groups for minerals in this locality:
Acanthite Allargentum Aragonite Argyrodite Arsenic Arsenopyrite Baryte Calcite Chalcopyrite Clay
Clinozoisite Copper Corundum Covellite Epidote Feldspar Fluorite Geocronite Jalpaite Malachite
Marcasite Melonite Mica Molybdenite Nickeline None Polybasite Pyrite Quartz Rhodonite
Rocksalt Rutile Scheelite Sphalerite Spinel Stibnite Stilbite Tetrahedrite Titanite Zircon

67 IMA Minerals at location:

Acanthite ()*	Albite ()*	Ankerite ()*	Argyrodite ()*	Arsenopyrite ()*
Baryte ()*	Bismuth ()*	Bismuthinite ()*	Bornite ()*	Boulangerite ()*
Calaverite ()*	Calcite ()*	Cassiterite ()*	Celsian ()*	Cerussite ()*
Chalcocite ()*	Chalcopyrite ()*	Copper ()*	Covellite ()*	Dolomite ()*
Dyscrasite ()*	Epidote ()*	Fluorite ()*	Freibergite ()*	Galena ()*
Geocronite ()*	Gold ()*	Graphite ()*	Hematite ()*	Hessite ()*
Ilmenite ()*	Jalpaite ()*	Jordanite ()*	Magnesite ()*	Magnetite ()*
Malachite ()*	Manganite ()*	Marcasite ()*	Mckinstryite ()*	Molybdenite ()*
Muscovite ()*	Pearceite ()*	Petzite ()*	Polybasite ()*	Proustite ()*
Pyrargyrite ()*	Pyrite ()*	Pyrolusite ()*	Pyrrhotite ()*	Quartz ()*
Realgar ()*	Rhodochrosite ()*	Rhodonite ()*	Rutile ()*	Scheelite ()*
Scorodite ()*	Siderite ()*	Silver ()*	Sphalerite ()*	Stellerite ()*
Stephanite ()*	Stibnite ()*	Stromeyerite ()*	Tennantite-(Fe) ()*	Tetrahedrite-(Zn) ()*
Titanite ()*	Zircon ()*

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
Acanthite ()*	Acanthite	Ag₂S	252	201	1	130246	2793
Albite ()*	Feldspar	Na(AlSi₃O₈)			14	130255,130283,130292,130317,130321,130347,130355,130358,130363,130380,130395,130398,130461,130462	8803
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂			20	130256,130257,130272,130283,130285,130288,130298,130318,130321,130329,130331,130338,130347,130355,130358,130363,130380,130395,130398,130402	3092
Argyrodite ()*	Argyrodite	Ag₈GeS₆	252	201	1	130246	62
Arsenopyrite ()*	Arsenopyrite	FeAsS	252	201	50	130246,130255,130272,130274,130281,130283,130287,130289,130298,130300,130308,130313,130316,130321,130326,130328,130330,130331,130338,130341,130347,130355,130357,130358,130360,130361,130363,130379,130380,130389,130390,130394,130395,130397,130398,130400,130402,130403,130405,130407,130412,130413,130419,130421,130426,130430,130434,130456,130459,130461	9052
Baryte ()*	Baryte	Ba(SO₄)	252	201	1	130246	11547
Bismuth ()*	Arsenic	Bi			3	130272,130338,130402	1966
Bismuthinite ()*	Stibnite	Bi₂S₃			3	130272,130338,130402	1935
Bornite ()*	None	Cu₅FeS₄	252	201	1	130246	5516
Boulangerite ()*	None	Pb₅Sb₄S₁₁	252	201	1	130246	843
Calaverite ()*	Melonite	AuTe₂			10	130255,130283,130321,130347,130355,130358,130363,130380,130395,130398	361
Calcite ()*	Calcite	Ca(CO₃)	252	201	36	130246,130248,130252,130255,130257,130261,130270,130283,130285,130288,130298,130302,130309,130315,130321,130323,130326,130331,130341,130343,130347,130355,130356,130358,130363,130380,130395,130398,130412,130419,130424,130434,130436,130455,130456,130462	27770
Cassiterite ()*	Rutile	SnO₂	252	201	1	130246	5171
Celsian ()*	Feldspar	Ba(Al₂Si₂O₈)	252	201	1	130246	100
Cerussite ()*	Aragonite	Pb(CO₃)			1	130257	4979
Chalcocite ()*	None	Cu₂S	252	201	1	130246	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	252	201	59	130246,130255,130257,130262,130270,130271,130272,130280,130283,130285,130288,130301,130302,130305,130307,130313,130316,130318,130320,130321,130323,130324,130326,130329,130338,130340,130346,130347,130351,130355,130356,130357,130358,130361,130363,130366,130380,130383,130384,130393,130395,130398,130401,130402,130407,130408,130419,130421,130429,130437,130438,130441,130443,130445,130455,130456,130457,130459,130464	27198
Copper ()*	Copper	Cu			1	130351	3846
Covellite ()*	Covellite	CuS	252	201	1	130246	4165
Dolomite ()*	None	CaMg(CO₃)₂	252	201	15	130246,130255,130270,130283,130302,130315,130321,130329,130347,130355,130358,130363,130380,130395,130398	9895
Dyscrasite ()*	Allargentum	Ag_3+xSb_1-x (x ≈ 0.2)	252	201	1	130246	180
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	252	201	5	130246,130255,130256,130257,130309	8173
Fluorite ()*	Fluorite	CaF₂			1	130390	9617
Freibergite ()*	Tetrahedrite	Ag₆[Cu₄Fe₂]Sb₄S₁₂	252	201	1	130246	663
Galena ()*	Rocksalt	PbS	252	201	63	130246,130248,130255,130256,130261,130270,130271,130272,130276,130280,130281,130283,130287,130289,130298,130300,130302,130303,130308,130313,130316,130320,130321,130323,130326,130328,130331,130338,130340,130341,130345,130347,130348,130355,130357,130358,130360,130361,130363,130366,130379,130380,130383,130387,130390,130393,130394,130395,130398,130401,130402,130405,130407,130413,130419,130421,130426,130429,130430,130434,130456,130457,130462	24243
Geocronite ()*	Geocronite	Pb₁₄Sb₆S₂₃	252	201	1	130246	133
Gold ()*	Copper	Au	252	201	77	130246,130255,130256,130257,130259,130268,130271,130272,130277,130278,130280,130283,130285,130287,130293,130298,130299,130301,130302,130305,130306,130308,130313,130318,130320,130321,130323,130326,130327,130329,130331,130333,130336,130337,130338,130339,130341,130342,130347,130355,130358,130359,130362,130363,130364,130365,130367,130369,130370,130371,130377,130379,130380,130382,130386,130388,130390,130395,130396,130398,130400,130402,130403,130407,130412,130414,130415,130418,130419,130420,130421,130426,130432,130434,130454,130457,130460	30554
Graphite ()*	None	C	252	201	1	130246	2812
Hematite ()*	Corundum	Fe₂O₃			1	130288	14640
Hessite ()*	None	Ag₂Te			10	130255,130283,130321,130347,130355,130358,130363,130380,130395,130398	804
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	252	201	3	130246,130271,130422	5433
Jalpaite ()*	Jalpaite	Ag₃CuS₂	252	201	1	130246	116
Jordanite ()*	Geocronite	Pb₁₄As₆S₂₃	252	201	1	130246	105
Magnesite ()*	Calcite	Mg(CO₃)	252	201	1	130246	1487
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄			3	130309,130350,130422	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂			1	130288	12537
Manganite ()*	Rutile	Mn³⁺O(OH)			1	130427	770
Marcasite ()*	Marcasite	FeS₂	252	201	1	130246	5674
Mckinstryite ()*	None	Ag₅Cu₃S₄	252	201	1	130246	51
Molybdenite ()*	Molybdenite	MoS₂			5	130294,130390,130442,130443,130444	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	252	201	17	130246,130248,130251,130252,130255,130256,130257,130270,130283,130321,130347,130355,130358,130363,130380,130395,130398	17380
Pearceite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(As,Sb)₂S₇]	252	201	1	130246	249
Petzite ()*	None	Ag₃AuTe₂			10	130255,130283,130321,130347,130355,130358,130363,130380,130395,130398	409
Polybasite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(Sb,As)₂S₇]	252	201	1	130246	716
Proustite ()*	None	Ag₃AsS₃	252	201	1	130246	733
Pyrargyrite ()*	None	Ag₃SbS₃	252	201	3	130246,130326,130419	1425
Pyrite ()*	Pyrite	FeS₂	252	201	121	130246,130248,130251,130253,130255,130257,130261,130262,130267,130269,130270,130272,130274,130276,130279,130281,130283,130285,130287,130288,130289,130290,130292,130296,130298,130300,130302,130304,130305,130306,130307,130308,130309,130313,130315,130316,130317,130318,130320,130321,130322,130323,130324,130325,130326,130328,130329,130330,130331,130333,130335,130336,130338,130340,130341,130343,130344,130345,130346,130347,130351,130353,130355,130356,130357,130358,130360,130361,130362,130363,130366,130368,130372,130380,130381,130383,130384,130387,130389,130391,130392,130393,130394,130395,130398,130401,130402,130403,130404,130405,130407,130408,130411,130415,130417,130419,130420,130421,130423,130424,130429,130430,130431,130434,130435,130437,130438,130439,130440,130441,130442,130443,130446,130447,130453,130455,130456,130457,130459,130461,130462	39462
Pyrolusite ()*	Rutile	MnO₂			1	130427	3106
Pyrrhotite ()*	Nickeline	Fe₇S₈			42	130270,130272,130276,130279,130280,130286,130295,130301,130307,130310,130313,130314,130318,130326,130333,130338,130340,130348,130352,130357,130361,130366,130373,130374,130378,130379,130402,130403,130413,130419,130421,130425,130428,130431,130434,130438,130442,130443,130445,130447,130457,130464	9056
Quartz ()*	Quartz	SiO₂	252	201	146	130246,130248,130251,130252,130255,130256,130257,130261,130267,130268,130269,130270,130271,130272,130273,130274,130276,130280,130281,130282,130283,130284,130285,130286,130287,130288,130289,130290,130292,130295,130296,130298,130300,130301,130302,130303,130304,130305,130306,130307,130308,130309,130310,130311,130312,130313,130314,130315,130316,130317,130318,130320,130321,130322,130323,130324,130325,130326,130328,130329,130330,130331,130332,130333,130336,130338,130339,130340,130341,130343,130344,130345,130346,130347,130348,130349,130351,130352,130353,130355,130356,130357,130358,130360,130361,130363,130366,130368,130373,130374,130375,130378,130379,130380,130383,130384,130387,130389,130390,130391,130393,130394,130395,130397,130398,130400,130401,130402,130403,130404,130405,130406,130407,130412,130413,130415,130417,130419,130420,130421,130423,130424,130425,130426,130427,130428,130429,130430,130434,130435,130436,130437,130438,130441,130443,130446,130447,130448,130453,130455,130456,130457,130459,130461,130462,130464	61156
Realgar ()*	None	AsS	252	201	1	130246	712
Rhodochrosite ()*	Calcite	Mn(CO₃)			2	130390,130427	1711
Rhodonite ()*	Rhodonite	CaMn₃Mn(Si₅O₁₅)			1	130427	969
Rutile ()*	Rutile	TiO₂	252	201	11	130246,130255,130283,130321,130347,130355,130358,130363,130380,130395,130398	5614
Scheelite ()*	Scheelite	Ca(WO₄)			3	130271,130341,130390	4894
Scorodite ()*	None	Fe³⁺(AsO₄)·2H₂O			1	130360	1153
Siderite ()*	Calcite	Fe(CO₃)			1	130437	6417
Silver ()*	Copper	Ag	252	201	6	130246,130280,130326,130340,130407,130419	5186
Sphalerite ()*	Sphalerite	ZnS	252	201	53	130246,130248,130255,130256,130261,130270,130271,130272,130274,130276,130280,130283,130287,130300,130302,130316,130320,130321,130323,130326,130328,130333,130338,130340,130341,130345,130347,130348,130355,130356,130358,130361,130363,130380,130390,130393,130394,130395,130398,130401,130402,130405,130407,130413,130419,130421,130429,130430,130456,130457,130459,130462,130464	21482
Stellerite ()*	Stilbite	Ca₄(Si₂₈Al₈)O₇₂·28H₂O	252	201	0		189
Stephanite ()*	None	Ag₅SbS₄	252	201	1	130246	586
Stibnite ()*	Stibnite	Sb₂S₃			7	130261,130312,130316,130326,130328,130401,130419	3418
Stromeyerite ()*	None	CuAgS	252	201	1	130246	332
Tennantite-(Fe) ()*	Tetrahedrite	Cu₆(Cu₄Fe₂)As₄S₁₃	252	201	1	130246	1803
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	252	201	23	130246,130248,130255,130261,130270,130272,130280,130283,130321,130326,130338,130340,130347,130355,130358,130363,130380,130395,130398,130402,130407,130419,130456	5317
Titanite ()*	Titanite	CaTi(SiO₄)O			1	130255	4899
Zircon ()*	Zircon	Zr(SiO₄)			1	130271	5251

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
	vms-00992	252	201	Triassic											11520	Greens Creek (Big Sore Mine), Admiralty District, Juneau, Alaska, USA	Greens Creek	Moiser et al. (2009)		USGSOFR2009-1034

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...