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:
Beaverhead Mining District (Dark Horse Mining District), Beaverhead Co., Montana, USA

mindat Locality ID: 50231
mindat URL: http://www.mindat.org/loc-50231.html

Tectonic Settings:

Total number of sublocalities beneath "Beaverhead Mining District (Dark Horse Mining District), Beaverhead Co., Montana, USA": 39
Total number of bottom-level sublocalities: 38

Number of Child Localities: 38
Child Localities:
Ajax Mine (Carrie Leonard)
Alaska Prospect
Blackrock Prospect
Copper Queen Claims
Cow Creek Placer
Dark Horse Mine (Darkhorse)
Darkhorse Creek Placer (Mulchey Creek)
Flying Cloud Prospect
Gold King Prospect
Gold Nugget Prospect
Hope Prospect
Jackson Mine
Jahnke Mine (Ranger; Straight Tip; Wabash; Potomac; Mt. Vernon; Good Hope; Mountain Oreway)
Jung Frau
Little Moose Horn Occurrence
Lucy Prospect
Miner Creek Placer
Mystery Prospect
Old Timer Prospect
Ora Astra Prospect
Pioneer Mine {2}
Ruby Creek Placers
Scout Prospect
Silver Ridge Group
Silver Ridge Group (Ranger Mine; Joker; Slag-A-Melt Mine; Comet; Gold Ridge)
Souviner Prospect
Sunshine Claim
Towner Placer
Treasure Box Prospect
Unknown Adits Prospect (MRDS - 10269713)
Unknown Placer (MRDS - 10220899)
Unnamed Gold Prospect (MRDS - 10124068)
Unnamed Gold Prospect (MRDS - 10124104)
Unnamed Gold Prospect (MRDS - 10147673)
Unnamed Gold Prospect (MRDS - 10148154)
Unnamed Gold Prospect (MRDS - 10220630)
Unnamed Gold Prospect (MRDS - 10269732)
Unnamed Silver Prospect (MRDS - 10269681)

Latitude: 45°18'49"N
Longitude: 113°39'38"W
Decimal Degree (lat, lon): 45.313611111111,-113.66055555556

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.

Allophane	Baryte	Calcite	Chalcopyrite	Clay	Clinozoisite	Copper	Corundum	Epidote	Malachite
Mica	Molybdenite	None	Not in a structural group	Pyrite	Quartz	Rocksalt	Scheelite	Spinel	Tetrahedrite

Azurite ()*	Baryte ()*	Bornite ()*	Calcite ()*	Chalcocite ()*
Chalcopyrite ()*	Chrysocolla ()*	Copper ()*	Cuprite ()*	Epidote ()*
Galena ()*	Gold ()*	Hematite ()*	Magnetite ()*	Malachite ()*
Molybdenite ()*	Muscovite ()*	Pyrite ()*	Quartz ()*	Scheelite ()*
Tetrahedrite-(Zn) ()*

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 Au Ba C Ca Cu Fe H K Mo O Pb S Sb Si W

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Allophane Baryte Calcite Chalcopyrite Clay Clinozoisite Copper Corundum Epidote Malachite
Mica Molybdenite None Not in a structural group Pyrite Quartz Rocksalt Scheelite Spinel Tetrahedrite

21 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	1	226394	5509
Baryte ()*	Baryte	Ba(SO₄)	1	226395	11547
Bornite ()*	None	Cu₅FeS₄	2	226387,226394	5516
Calcite ()*	Calcite	Ca(CO₃)	1	226394	27770
Chalcocite ()*	None	Cu₂S	1	226387	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	6	226382,226385,226387,226394,226406,226409	27198
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	2	226382,226394	3531
Copper ()*	Copper	Cu	1	226394	3846
Cuprite ()*	Not in a structural group	Cu₂O	1	226394	2970
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1	226394	8173
Galena ()*	Rocksalt	PbS	5	226382,226385,226393,226394,226406	24243
Gold ()*	Copper	Au	6	226382,226386,226388,226394,226398,226403	30554
Hematite ()*	Corundum	Fe₂O₃	2	226387,226394	14640
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	2	226382,226394	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	3	226382,226387,226394	12537
Molybdenite ()*	Molybdenite	MoS₂	1	226406	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1	226394	17380
Pyrite ()*	Pyrite	FeS₂	1	226406	39462
Quartz ()*	Quartz	SiO₂	8	226382,226385,226387,226393,226394,226395,226406,226409	61156
Scheelite ()*	Scheelite	Ca(WO₄)	1	226394	4894
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	2	226395,226409	5317

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...