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:
Mazama Ridge, Mount Rainier National Park, Pierce Co., Washington, USA

Oldest recorded age at locality: 19.8
Youngest recorded age at locality: 16.2

mindat Locality ID: 15281
mindat URL: http://www.mindat.org/loc-15281.html

Tectonic Settings:

Total number of sublocalities beneath "Mazama Ridge, Mount Rainier National Park, Pierce Co., Washington, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 46°47'4"N
Longitude: 121°43'23"W
Decimal Degree (lat, lon): 46.784444444444,-121.72305555556

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.

Clinozoisite	Epidote	None	Spinel	Titanite

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 Ca Fe H O Si Ti

Elements from minerals reported directly at this locality: Al Ca Fe H O Si Ti

Structural Groups for minerals in this locality:
Clinozoisite Epidote None Spinel Titanite

3 IMA Minerals at location:

Epidote ()*	Magnetite ()*	Titanite ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	19.8	16.2	8173
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	19.8	16.2	14899
Titanite ()*	Titanite	CaTi(SiO₄)O	19.8	16.2	4899

7 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Sample Num	MinDat Locality ID	Dated Locality (Max Age)	Reference	Reference ID
NAVDAT-60037	19.8	16.2	18±1.8	60037	15281	Mazama Ridge, Mount Rainier National Park, Pierce Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-60038	19.8	16.2	18±1.8	60038	15281	Mazama Ridge, Mount Rainier National Park, Pierce Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-9275	19.8	16.2	18±1.8	9275	15281	Mazama Ridge, Mount Rainier National Park, Pierce Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-9286	19.8	16.2	18±1.8	9286	15281	Mazama Ridge, Mount Rainier National Park, Pierce Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-9293	19.8	16.2	18±1.8	9293	15281	Mazama Ridge, Mount Rainier National Park, Pierce Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-9295	19.8	16.2	18±1.8	9295	15281	Mazama Ridge, Mount Rainier National Park, Pierce Co., Washington, USA	NAVDAT	NAVDAT
NAVDAT-9296	19.8	16.2	18±1.8	9296	15281	Mazama Ridge, Mount Rainier National Park, Pierce Co., Washington, USA	NAVDAT	NAVDAT

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...