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:
Robert Mine (Roberts Mine; Kennedy Mine), Cuyuna Range, Crow Wing Co., Minnesota, USA

mindat Locality ID: 19745
mindat URL: http://www.mindat.org/loc-19745.html

Tectonic Settings:

Total number of sublocalities beneath "Robert Mine (Roberts Mine; Kennedy Mine), Cuyuna Range, Crow Wing Co., Minnesota, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 46°22'0"N
Longitude: 94°10'"W
Decimal Degree (lat, lon): 46.366666666667,-94.166666666667

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.

Clay	Corundum	Diaspore	Kaolinite	None	Quartz	Rutile	Spinel

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: Fe H Mn O Si

Elements from minerals reported directly at this locality: Fe H Mn O Si

Structural Groups for minerals in this locality:
Clay Corundum Diaspore Kaolinite None Quartz Rutile Spinel

6 IMA Minerals at location:

Groutite ()*	Hematite ()*	Hisingerite ()*	Magnetite ()*	Manganite ()*
Quartz ()*

Mineral name	Structural Groups	IMA Formula	# of localities containing mineral
Groutite ()*	Diaspore	Mn³⁺O(OH)	72
Hematite ()*	Corundum	Fe₂O₃	14640
Hisingerite ()*	Kaolinite Clay	Fe₂Si₂O₅(OH)₄·2H₂O	144
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	14899
Manganite ()*	Rutile	Mn³⁺O(OH)	770
Quartz ()*	Quartz	SiO₂	61156

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL
R080004	Robert Mine (Roberts Mine; Kennedy Mine), Cuyuna Range, Crow Wing Co., Minnesota, USA	https://rruff.info/R080004
R060827	Robert Mine (Roberts Mine; Kennedy Mine), Cuyuna Range, Crow Wing Co., Minnesota, USA	https://rruff.info/R060827

All locality data graciously provided by mindat.org

All age data...