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:
Calvert Co., Maryland, USA

mindat Locality ID: 195609
mindat URL: http://www.mindat.org/loc-195609.html

Tectonic Settings:

Total number of sublocalities beneath "Calvert Co., Maryland, USA": 8
Total number of bottom-level sublocalities: 8

Number of Child Localities: 8
Child Localities:
Calvert Cliffs
Cove Point Placer
Kaylorite Corporation Greensand Pit
Lyons Creek Diatomaceous Earth Deposit
Mackall Building Stone Quarry
Old Clay Deposit N. Of Solomons Island
Old Greensand-Diatomaceous Earth Pit
Scientists Cliffs Beach Alluvials

Latitude: 38°31'31"N
Longitude: 76°32'41"W
Decimal Degree (lat, lon): 38.525277777778,-76.544722222222

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	Clinozoisite	Copiapite	Coronadite	Corundum	Epidote	Marcasite	None	Not in a structural group	Pyroxene
Rutile	Spinel	Staurolite	Titanite	Zircon

Birnessite ()*	Copiapite ()*	Corundum ()*	Enstatite ()*	Epidote ()*
Hematite ()*	Hollandite ()*	Ilmenite ()*	Kyanite ()*	Magnetite ()*
Marcasite ()*	Opal ()*	Romanèchite ()*	Rutile ()*	Spinel ()*
Staurolite ()*	Titanite ()*	Todorokite ()*	Zircon ()*

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 Ca Fe H K Mg Mn Na O S Si Sr Ti Zr

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amorphous Clinozoisite Copiapite Coronadite Corundum Epidote Marcasite None Not in a structural group Pyroxene
Rutile Spinel Staurolite Titanite Zircon

19 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Birnessite ()*	None	(Na,Ca,K)_0.6(Mn⁴⁺,Mn³⁺)₂O₄·1.5H₂O	1	218580	178
Copiapite ()*	Copiapite	Fe²⁺Fe³⁺₄(SO₄)₆(OH)₂·20H₂O	1	218580	382
Corundum ()*	Corundum	Al₂O₃	1	218587	1797
Enstatite ()*	Pyroxene	Mg₂Si₂O₆	1	218587	944
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1	218587	8173
Hematite ()*	Corundum	Fe₂O₃	1	218580	14640
Hollandite ()*	Coronadite	Ba(Mn⁴⁺₆Mn³⁺₂)O₁₆	1	218580	243
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	2	218581,218587	5433
Kyanite ()*	Not in a structural group	Al₂OSiO₄	1	218587	1507
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1	218587	14899
Marcasite ()*	Marcasite	FeS₂	1	218580	5674
Opal ()*	Amorphous	SiO₂·nH₂O	1	218586	2994
Romanèchite ()*	None	(Ba,H₂O)₂(Mn⁴⁺,Mn³⁺)₅O₁₀	1	218580	312
Rutile ()*	Rutile	TiO₂	2	218581,218587	5614
Spinel ()*	Spinel	MgAl₂O₄	1	218587	1934
Staurolite ()*	Staurolite	Fe²⁺₂Al₉Si₄O₂₃(OH)	1	218587	978
Titanite ()*	Titanite	CaTi(SiO₄)O	1	218587	4899
Todorokite ()*	None	(Na,Ca,K,Ba,Sr)_1-x(Mn,Mg,Al)₆O₁₂·3-4H₂O	1	218580	433
Zircon ()*	Zircon	Zr(SiO₄)	2	218581,218587	5251

No ages have been assigned to this locality yet.

All locality data graciously provided by mindat.org

All age data...