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:
Rochford District, Pennington Co., South Dakota, USA

mindat Locality ID: 59381
mindat URL: http://www.mindat.org/loc-59381.html

Tectonic Settings:

Total number of sublocalities beneath "Rochford District, Pennington Co., South Dakota, USA": 29
Total number of bottom-level sublocalities: 29

Number of Child Localities: 29
Child Localities:
Alta Mine
Amphibolite
Bee Mine (Climax; Solnar; Copper Reef Nos. 1 And 2; Black Hills Copper Company)
Black Eagle Mine (Blair Group)
Blakely Bog Iron Deposit
California Mine
Carbon King Group (Carbon King Property)
Cochrane Mine (Lookout Property; Mineral Group; Alta Lodi Mining Company Mine)
Copper Cliff Mine
Cottrill Bog Iron Deposit
Divide & Ridge Mercedes Group (Apex; Apex No. 4; Hidden Gem; Apex No. 8)
Dungey Bog Iron Deposit
Evangeline Mine
Evans Claim
G & H Group (Carbon King Property)
Gold King Mine (Gordelia Mine)
Golden West Mine (Benedict Property)
Gordelia (Gold King; Charter Oak Mining; Colu; Mbia Mining; Silver Creek Mining Company)
Hausle Bog Iron Deposit (Double Star Claim)
King Of The West (North Star)
Lessering Bog Iron Deposit (Iron Lode)
Lookout Mine
Manke Claim (Wilhelm)
Marigold Mine
Mary Belle Mine
Montana Mine MS 1697
Montezuma Mine (Montezuma Nos. 3 To 7; Red Jim; New Montezuma)
Standby Mine
Yellow Bird Mine (Dexter Lode)

Latitude: 44°6'33"N
Longitude: 103°44'57"W
Decimal Degree (lat, lon): 44.109166666667,-103.74916666667

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.

Alunite	Amphibole	Aragonite	Arsenopyrite	Calcite	Chalcopyrite	Clay	Copper	Diaspore	Epidote
Malachite	Marcasite	Nickeline	None	Not in a structural group	Pyrite	Quartz	Spinel	Stilpnomelane	Sulphur

Actinolite ()*	Ankerite ()*	Aragonite ()*	Arsenopyrite ()*	Azurite ()*
Chalcopyrite ()*	Cummingtonite ()*	Goethite ()*	Gold ()*	Graphite ()*
Jarosite ()*	Magnetite ()*	Malachite ()*	Marcasite ()*	Pyrite ()*
Pyrrhotite ()*	Quartz ()*	Siderite ()*	Silver ()*	Stilpnomelane ()*
Sulphur ()*	Zoisite ()*

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 S Si

Elements from minerals reported directly at this locality: Fe O S

Structural Groups for minerals in this locality:
Alunite Amphibole Aragonite Arsenopyrite Calcite Chalcopyrite Clay Copper Diaspore Epidote
Malachite Marcasite Nickeline None Not in a structural group Pyrite Quartz Spinel Stilpnomelane Sulphur

22 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	1	266189	3419
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	1	266188	3092
Aragonite ()*	Aragonite	Ca(CO₃)	1	266189	3250
Arsenopyrite ()*	Arsenopyrite	FeAsS	1	266181	9052
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	1	266164	5509
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	2	266164,266186	27198
Cummingtonite ()*	Amphibole	Mg₂Mg₅Si₈O₂₂(OH)₂	7	266165,266177,266178,266181,266186,266188,266189	327
Goethite ()*	Diaspore	FeO(OH)	2	266180,266182	7437
Gold ()*	Copper	Au	12	266162,266164,266165,266167,266169,266172,266174,266177,266183,266185,266189,266190	30554
Graphite ()*	None	C	5	266164,266168,266170,266176,266189	2812
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆	1	266175	2228
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	0		14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	1	266164	12537
Marcasite ()*	Marcasite	FeS₂	1	266181	5674
Pyrite ()*	Pyrite	FeS₂	4	266164,266181,266186,266188	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	5	266164,266178,266181,266186,266188	9056
Quartz ()*	Quartz	SiO₂	6	266162,266163,266167,266177,266186,266189	61156
Siderite ()*	Calcite	Fe(CO₃)	2	266181,266189	6417
Silver ()*	Copper	Ag	10	266164,266165,266169,266172,266177,266183,266185,266186,266189,266190	5186
Stilpnomelane ()*	Stilpnomelane Clay	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆·nH₂O	1	266189	456
Sulphur ()*	Sulphur	S	0		2045
Zoisite ()*	Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	1	266163	1025

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...