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:
Oak Grove Fork, Clackamas River Localities, Clackamas Co., Oregon, USA

mindat Locality ID: 8037
mindat URL: http://www.mindat.org/loc-8037.html

Tectonic Settings:

Total number of sublocalities beneath "Oak Grove Fork, Clackamas River Localities, Clackamas Co., Oregon, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 45°4'28"N
Longitude: 122°3'3"W
Decimal Degree (lat, lon): 45.074444444444,-122.05083333333

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	Calcite	Clay	Gismondine	Heulandite	None	Pyrite	Smectite-vermiculite	Thomsonite

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 Ba C Ca Fe H K Mg Na O S Si

Elements from minerals reported directly at this locality: Al Ba C Ca Fe H K Mg Na O S Si

Structural Groups for minerals in this locality:
Baryte Calcite Clay Gismondine Heulandite None Pyrite Smectite-vermiculite Thomsonite

7 IMA Minerals at location:

Baryte ()*	Calcite ()*	Gismondine ()*	Heulandite-Ca ()*	Montmorillonite ()*
Pyrite ()*	Thomsonite-Ca ()*

Mineral name	Structural Groups	IMA Formula	# of localities containing mineral
Baryte ()*	Baryte	Ba(SO₄)	11547
Calcite ()*	Calcite	Ca(CO₃)	27770
Gismondine ()*	Gismondine	Ca₂(Si₄Al₄)O₁₆·8H₂O	128
Heulandite-Ca ()*	Heulandite	(Ca,Na,K)₅(Si₂₇Al₉)O₇₂·26H₂O	246
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O	1508
Pyrite ()*	Pyrite	FeS₂	39462
Thomsonite-Ca ()*	Thomsonite	NaCa₂(Al₅Si₅)O₂₀·6H₂O	452

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...