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:
Bessemer, Gogebic Iron Range, Gogebic Co., Michigan, USA

mindat Locality ID: 20676
mindat URL: http://www.mindat.org/loc-20676.html

Tectonic Settings:

Total number of sublocalities beneath "Bessemer, Gogebic Iron Range, Gogebic Co., Michigan, USA": 3
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Geneva Mine (Geneva-Davis Mine)
Newport Mine (Bonnie Mine)
Powdermill Creek

Latitude: 46°27'31"N
Longitude: 90°6'52"W
Decimal Degree (lat, lon): 46.458611111111,-90.114444444444

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	Clay	Coronadite	Corundum	Diaspore	Feldspar	Mica	Molybdenite	None	Prehnite
Quartz	Rutile	Smectite-vermiculite	Stilpnomelane

Baryte ()*	Cryptomelane ()*	Goethite ()*	Hematite ()*	Manganite ()*
Microcline ()*	Molybdenite ()*	Montmorillonite ()*	Muscovite ()*	Prehnite ()*
Pyrolusite ()*	Quartz ()*	Romanèchite ()*	Stilpnomelane ()*

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: Al Ba Ca Fe H K Mg Mn Mo Na O S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Baryte Clay Coronadite Corundum Diaspore Feldspar Mica Molybdenite None Prehnite
Quartz Rutile Smectite-vermiculite Stilpnomelane

14 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Baryte ()*	Baryte	Ba(SO₄)	2	220379,220380	11547
Cryptomelane ()*	Coronadite	K(Mn⁴⁺₇Mn³⁺)O₁₆	1	220380	599
Goethite ()*	Diaspore	FeO(OH)	2	220379,220380	7437
Hematite ()*	Corundum	Fe₂O₃	2	220379,220380	14640
Manganite ()*	Rutile	Mn³⁺O(OH)	2	220379,220380	770
Microcline ()*	Feldspar	K(AlSi₃O₈)	1	220380	4924
Molybdenite ()*	Molybdenite	MoS₂	1	220380	5800
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O	1	220379	1508
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1	220379	17380
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	1	220379	1898
Pyrolusite ()*	Rutile	MnO₂	1	220380	3106
Quartz ()*	Quartz	SiO₂	3	220379,220380,220381	61156
Romanèchite ()*	None	(Ba,H₂O)₂(Mn⁴⁺,Mn³⁺)₅O₁₀	2	220379,220380	312
Stilpnomelane ()*	Stilpnomelane Clay	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆·nH₂O	1	220379	456

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...