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:
Efim Area, Kumak Ore Field, Orenburg Oblast, Russia

Oldest recorded age at locality: 230
Youngest recorded age at locality: 220

mindat Locality ID: 16770
mindat URL: http://www.mindat.org/loc-16770.html

Tectonic Settings:

Total number of sublocalities beneath "Efim Area, Kumak Ore Field, Orenburg Oblast, Russia": 0
Total number of bottom-level sublocalities: 0

Latitude: 51°9'0"N
Longitude: 60°8'0"E
Decimal Degree (lat, lon): 51.15,60.133333333333

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	Copper	Iron	Mica	None	Quartz

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 Cr Fe H K O Si

Elements from minerals reported directly at this locality: Al Au Cr Fe H K O Si

Structural Groups for minerals in this locality:
Clay Copper Iron Mica None Quartz

7 IMA Minerals at location:

Chromferide ()*	Chromium ()*	Ferchromide ()*	Gold ()*	Iron ()*
Muscovite ()*	Quartz ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Chromferide ()*	Iron	Fe_1.5Cr_0.2	230	220	3
Chromium ()*	Iron	Cr	230	220	26
Ferchromide ()*	Iron	Cr_1.5Fe_0.2	230	220	2
Gold ()*	Copper	Au	230	220	30554
Iron ()*	Iron	Fe	230	220	1089
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	230	220	17380
Quartz ()*	Quartz	SiO₂	230	220	61156

1 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	Cr-00061	230	220		K-Ar								Chromferide, Chromium, Ferchromide	Cr	16770	Efim Area, Kumak Ore Field, Orenburg Oblast, Russia		Sazonov et al. (2001)	10.2113/gsecongeo.96.4.685	EG96_685

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...