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:
Black District, Southeast Fairbanks Census Area, Alaska, USA

mindat Locality ID: 203129
mindat URL: http://www.mindat.org/loc-203129.html

Tectonic Settings:

Total number of sublocalities beneath "Black District, Southeast Fairbanks Census Area, Alaska, USA": 12
Total number of bottom-level sublocalities: 12

Number of Child Localities: 12
Child Localities:
Casca Basin Prospects
Casca Zinc Prospect
Ettrain Creek Prospect
Hard Luck Creek Prospect
Mount Casca; VABM Casca Prospects
Nation Gossan Prospects
Nation River Occurrences
Pleasant Creek Prospects
Step Mountain; WK Prospects
Three Castle Mountain Prospects
Unnamed Occurrence (ARDF - CY032; Tatonduk River)
Waterfall Creek Prospect

Latitude: 65°18'40"N
Longitude: 141°10'48"W
Decimal Degree (lat, lon): 65.311111111111,-141.18

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.

Baryte	Calcite	Corundum	None	Pyrite	Quartz	Rocksalt	Sphalerite

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: Ba C Ca Fe H O Pb S Si Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Baryte Calcite Corundum None Pyrite Quartz Rocksalt Sphalerite

9 IMA Minerals at location:

Baryte ()*	Calcite ()*	Galena ()*	Hematite ()*	Hydrozincite ()*
Pyrite ()*	Quartz ()*	Smithsonite ()*	Sphalerite ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Baryte ()*	Baryte	Ba(SO₄)	1	133517	11547
Calcite ()*	Calcite	Ca(CO₃)	1	133524	27770
Galena ()*	Rocksalt	PbS	3	133517,133523,133524	24243
Hematite ()*	Corundum	Fe₂O₃	2	133517,133526	14640
Hydrozincite ()*	None	Zn₅(CO₃)₂(OH)₆	1	133524	1066
Pyrite ()*	Pyrite	FeS₂	5	133516,133521,133523,133525,133527	39462
Quartz ()*	Quartz	SiO₂	4	133518,133523,133524,133527	61156
Smithsonite ()*	Calcite	Zn(CO₃)	1	133524	2473
Sphalerite ()*	Sphalerite	ZnS	3	133517,133521,133523	21482

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...