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:
Berners Bay District, Juneau, Alaska, USA

mindat Locality ID: 194811
mindat URL: http://www.mindat.org/loc-194811.html

Tectonic Settings:

Total number of sublocalities beneath "Berners Bay District, Juneau, Alaska, USA": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Jualin Mine
Kensington Mine

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0

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.

Aragonite	Arsenopyrite	Calcite	Chalcopyrite	Clay	Clinozoisite	Copper	Epidote	Feldspar	Melonite
Mica	None	Pyrite	Quartz	Rocksalt	Rutile	Sphalerite	Tetrahedrite	Titanite

Albite ()*	Ankerite ()*	Arsenopyrite ()*	Calaverite ()*	Calcite ()*
Cerussite ()*	Chalcopyrite ()*	Dolomite ()*	Epidote ()*	Galena ()*
Gold ()*	Hessite ()*	Muscovite ()*	Petzite ()*	Pyrite ()*
Quartz ()*	Rutile ()*	Sphalerite ()*	Tetrahedrite-(Zn) ()*	Titanite ()*

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 Cu Fe H K Mg Na O Pb S Sb Si Te Ti Zn

Elements from minerals reported directly at this locality: Ag Al As Au C Ca Cu Fe Mg Na O S Sb Si Te Ti Zn

Structural Groups for minerals in this locality:
Aragonite Arsenopyrite Calcite Chalcopyrite Clay Clinozoisite Copper Epidote Feldspar Melonite
Mica None Pyrite Quartz Rocksalt Rutile Sphalerite Tetrahedrite Titanite

20 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	0		8803
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	2	130256,130257	3092
Arsenopyrite ()*	Arsenopyrite	FeAsS	0		9052
Calaverite ()*	Melonite	AuTe₂	0		361
Calcite ()*	Calcite	Ca(CO₃)	1	130257	27770
Cerussite ()*	Aragonite	Pb(CO₃)	1	130257	4979
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1	130257	27198
Dolomite ()*	None	CaMg(CO₃)₂	0		9895
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	2	130256,130257	8173
Galena ()*	Rocksalt	PbS	1	130256	24243
Gold ()*	Copper	Au	2	130256,130257	30554
Hessite ()*	None	Ag₂Te	0		804
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	2	130256,130257	17380
Petzite ()*	None	Ag₃AuTe₂	0		409
Pyrite ()*	Pyrite	FeS₂	1	130257	39462
Quartz ()*	Quartz	SiO₂	2	130256,130257	61156
Rutile ()*	Rutile	TiO₂	0		5614
Sphalerite ()*	Sphalerite	ZnS	1	130256	21482
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	0		5317
Titanite ()*	Titanite	CaTi(SiO₄)O	0		4899

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...