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:
Flat Rock Tunnel, Lower Merion Township, Montgomery Co., Pennsylvania, USA

mindat Locality ID: 167688
mindat URL: http://www.mindat.org/loc-167688.html

Tectonic Settings:

Total number of sublocalities beneath "Flat Rock Tunnel, Lower Merion Township, Montgomery Co., Pennsylvania, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0

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.

Beryl	Calcite	Chabazite	Clay	Corundum	Feldspar	Garnet	Heulandite	Mica	None
Stilbite

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 Be C Ca Fe H K Na O Si Ti

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

Structural Groups for minerals in this locality:
Beryl Calcite Chabazite Clay Corundum Feldspar Garnet Heulandite Mica None
Stilbite

10 IMA Minerals at location:

Albite ()*	Almandine ()*	Beryl ()*	Calcite ()*	Chabazite-Ca ()*
Heulandite-Ca ()*	Ilmenite ()*	Microcline ()*	Muscovite ()*	Stilbite-Ca ()*

Mineral name	Structural Groups	IMA Formula	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	8803
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃	2353
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	4286
Calcite ()*	Calcite	Ca(CO₃)	27770
Chabazite-Ca ()*	Chabazite	Ca₂[Al₄Si₈O₂₄]·13H₂O	310
Heulandite-Ca ()*	Heulandite	(Ca,Na,K)₅(Si₂₇Al₉)O₇₂·26H₂O	246
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	5433
Microcline ()*	Feldspar	K(AlSi₃O₈)	4924
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	17380
Stilbite-Ca ()*	Stilbite	NaCa₄(Si₂₇Al₉)O₇₂·28H₂O	268

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...