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:
Washington Co., Arkansas, USA

mindat Locality ID: 187551
mindat URL: http://www.mindat.org/loc-187551.html

Tectonic Settings:

Total number of sublocalities beneath "Washington Co., Arkansas, USA": 7
Total number of bottom-level sublocalities: 5

Number of Child Localities: 4
Child Localities:
Farmington (Engels Mills)
Fayetteville
Rhea (Rhea Mill; Rheas Mills; Rhea's Mill)
Unnamed Locality

Latitude: 36°3'23"N
Longitude: 94°12'11"W
Decimal Degree (lat, lon): 36.056388888889,-94.203055555556

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.

Amorphous	Aragonite	Baryte	Calcite	Cerite	Copper	Corundum	Cubanite	Gypsum	Iron
None	Rocksalt	Sphalerite	Spinel

Aragonite ()*	Calcite ()*	Celestine ()*	Chromite ()*	Copper ()*
Galena ()*	Gypsum ()*	Ilmenite ()*	Iron ()*	Isocubanite ()*
Merrillite ()*	Opal ()*	Siderite ()*	Sphalerite ()*	Taenite ()*
Tetrataenite ()*	Troilite ()*

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: C Ca Cr Cu Fe H Mg Na Ni O P Pb S Si Sr Ti Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amorphous Aragonite Baryte Calcite Cerite Copper Corundum Cubanite Gypsum Iron
None Rocksalt Sphalerite Spinel

17 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Aragonite ()*	Aragonite	Ca(CO₃)	1	150342	3250
Calcite ()*	Calcite	Ca(CO₃)	1	150343	27770
Celestine ()*	Baryte	Sr(SO₄)	1	150343	1252
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	1	150344	3902
Copper ()*	Copper	Cu	1	150344	3846
Galena ()*	Rocksalt	PbS	1	150346	24243
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	1	150347	6890
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	1	150344	5433
Iron ()*	Iron	Fe	1	150344	1089
Isocubanite ()*	Sphalerite Cubanite	CuFe₂S₃	1	150344	191
Merrillite ()*	Cerite	Ca₉NaMg(PO₄)₇	1	150344	230
Opal ()*	Amorphous	SiO₂·nH₂O	1	150341	2994
Siderite ()*	Calcite	Fe(CO₃)	1	150343	6417
Sphalerite ()*	Sphalerite	ZnS	1	150346	21482
Taenite ()*	None	(Ni,Fe)	1	150344	703
Tetrataenite ()*	None	FeNi	1	150344	116
Troilite ()*	None	FeS	1	150344	1044

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...