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:
Manassas Quarry, Fairfax Co., Virginia, USA

mindat Locality ID: 103567
mindat URL: http://www.mindat.org/loc-103567.html

Tectonic Settings:

Total number of sublocalities beneath "Manassas Quarry, Fairfax Co., Virginia, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 38°50'17"N
Longitude: 77°25'51"W
Decimal Degree (lat, lon): 38.838055555556,-77.430833333333

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.

Calcite	Chabazite	Gyrolite	Heulandite	None	Not in a structural group	Prehnite	Pyrite	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 C Ca Fe H K Na O S Si

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

Structural Groups for minerals in this locality:
Calcite Chabazite Gyrolite Heulandite None Not in a structural group Prehnite Pyrite Stilbite

8 IMA Minerals at location:

Calcite ()*	Chabazite-Ca ()*	Gyrolite ()*	Heulandite-Ca ()*	Laumontite ()*
Prehnite ()*	Pyrite ()*	Stilbite-Ca ()*

Mineral name	Structural Groups	IMA Formula	# of localities containing mineral
Calcite ()*	Calcite	Ca(CO₃)	27770
Chabazite-Ca ()*	Chabazite	Ca₂[Al₄Si₈O₂₄]·13H₂O	310
Gyrolite ()*	Gyrolite	NaCa₁₆(Si₂₃Al)O₆₀(OH)₈·14H₂O	142
Heulandite-Ca ()*	Heulandite	(Ca,Na,K)₅(Si₂₇Al₉)O₇₂·26H₂O	246
Laumontite ()*	Not in a structural group	CaAl₂Si₄O₁₂·4H₂O	1271
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	1898
Pyrite ()*	Pyrite	FeS₂	39462
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...