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:
Riddle District, Douglas Co., Oregon, USA

Oldest recorded age at locality: 163
Youngest recorded age at locality: 163

mindat Locality ID: 50156
mindat URL: http://www.mindat.org/loc-50156.html

Tectonic Settings:

Total number of sublocalities beneath "Riddle District, Douglas Co., Oregon, USA": 52
Total number of bottom-level sublocalities: 51

Number of Child Localities: 51
Child Localities:
A Mine (Rice Chrome)
Beaver Spring Occurrence
Black Boy (Starvout Group)
Buckhorn Prospect
Bull Run Placers
Cedar Springs Prospect
Cloudy Day
Curtis Occurrence (Starvout Creek)
Dodson Deposit (Whitsett)
Douglas Mine (Baker)
Fisher Occurrence
Flying Squirrel Occurrence
Forget-Me-Not
Four Point Chrome Claim
Garden Mines
Glenbrook Nickel Company (Nickel Mt Group)
Gold Bluff Mine
Gray Boy (Starvout Group)
Green Copper Claim
Green Mountain Occurrence
Green Mountain Prospect
Hackler Height Placer (Hackler & Heights Placer)
Hogum Hydraulic Mine (Hogum Creek; Booth Placer)
Huckleberry Mine
Indiana Placer
Levan's Ledge Mine
Linda Marie (Triple L)
Lucky Nine Group (Davis; Baxter; Pansy)
Mildred Mine
Miser Mine
Morris Occurrence
Nickel Mountain
Nickel Mountain (Hanna Nickel Mine)
Nickel Mountain Group (Lower Occurrence)
Nickel Mountain Group (Upper Occurrence)
Ollala Placers (Fisher Placer)
Puzzler Mine
Quartzmill Occurrence
Riddle
Silver Peak (Oregon Exploration Company; Umpqua Consolidated Mining Company; Silver Butte Mine)
Starve Out Occurrence
Stuempges Prospect
Sweetbriar Occurrence (Gold Ridge Claim?)
Tennessee Bulch Prospect
Union Leader
Unnamed Gold Pit (MRDS - 10298321)
Unnamed Gold Prospect (MRDS - 10176690)
Unnamed Gold Prospect (MRDS - 10274511)
Victory Placer Mine
Warner
Willis Occurrence

Latitude: 42°50'50"N
Longitude: 123°19'21"W
Decimal Degree (lat, lon): 42.847222222222,-123.3225

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	Chalcopyrite	Clay	Copper	Corundum	Covellite	Cubanite	Malachite	Nickeline	None
Pyrite	Quartz	Rocksalt	Sepiolite	Serpentine	Sphalerite	Spinel	Tetrahedrite	Wurtzite

Baryte ()*	Bornite ()*	Chalcocite ()*	Chalcopyrite ()*	Chromite ()*
Covellite ()*	Cubanite ()*	Galena ()*	Gold ()*	Ilmenite ()*
Lizardite ()*	Magnetite ()*	Malachite ()*	Mercury ()*	Pecoraite ()*
Pyrite ()*	Pyrrhotite ()*	Quartz ()*	Sepiolite ()*	Sphalerite ()*
Spinel ()*	Tennantite-(Fe) ()*

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 As Au Ba C Cr Cu Fe H Hg Mg Ni O Pb S Si Ti Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Baryte Chalcopyrite Clay Copper Corundum Covellite Cubanite Malachite Nickeline None
Pyrite Quartz Rocksalt Sepiolite Serpentine Sphalerite Spinel Tetrahedrite Wurtzite

22 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Baryte ()*	Baryte	Ba(SO₄)			1	257476	11547
Bornite ()*	None	Cu₅FeS₄			2	257437,257476	5516
Chalcocite ()*	None	Cu₂S			2	257476,257478	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂			7	257437,257442,257448,257456,257461,257476,257479	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	163	163	11	257436,257438,257439,257449,257453,257455,257462,257463,257468,257469,257477	3902
Covellite ()*	Covellite	CuS			1	257476	4165
Cubanite ()*	Cubanite Wurtzite	CuFe₂S₃			1	257456	802
Galena ()*	Rocksalt	PbS			1	257476	24243
Gold ()*	Copper	Au			7	257442,257443,257445,257448,257461,257471,257487	30554
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃			1	257468	5433
Lizardite ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄			1	257474	359
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄			2	257468,257478	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂			2	257478,257479	12537
Mercury ()*	None	Hg			1	257466	397
Pecoraite ()*	Clay Serpentine	Ni₃Si₂O₅(OH)₄			1	257475	40
Pyrite ()*	Pyrite	FeS₂			9	257437,257448,257456,257459,257461,257473,257476,257479,257487	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈			1	257456	9056
Quartz ()*	Quartz	SiO₂			4	257442,257468,257474,257476	61156
Sepiolite ()*	Sepiolite Clay	Mg₄Si₆O₁₅(OH)₂·6H₂O			1	257468	241
Sphalerite ()*	Sphalerite	ZnS			2	257437,257476	21482
Spinel ()*	Spinel	MgAl₂O₄			1	257468	1934
Tennantite-(Fe) ()*	Tetrahedrite	Cu₆(Cu₄Fe₂)As₄S₁₃			1	257476	1803

5 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
podchrome-00415	163	163	Middle Jurassic (164-162 Ma)	Cr	147594	Black Boy (Starvout Group), Riddle District, Douglas Co., Oregon, USA	Black Boy Chromite	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00416	163	163	Middle Jurassic (164-162 Ma)	Cr	148876	Four Point Chrome Claim, Riddle District, Douglas Co., Oregon, USA	Four Point Chrome Claim	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00414	163	163	Middle Jurassic (164-162 Ma)	Cr	149966	Linda Marie (Triple L), Riddle District, Douglas Co., Oregon, USA	Linda Maria Claim	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00412	163	163	Middle Jurassic (164-162 Ma)	Cr	150136	Lucky Nine Group (Davis; Baxter; Pansy), Riddle District, Douglas Co., Oregon, USA	Unnamed Cuts	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00413	163	163	Middle Jurassic (164-162 Ma)	Cr	150136	Lucky Nine Group (Davis; Baxter; Pansy), Riddle District, Douglas Co., Oregon, USA	Davis Cut	Moiser et al. (2012)	USGSSIR2012_5157

All locality data graciously provided by mindat.org

All age data...