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:
Hunting Hill Quarry (Rockville Crushed Stone Quarry; Travilah Quarry; Rockville Quarry; Bardon Stone Quarry; Aggregate Industries Quarry), Rockville, Montgomery Co., Maryland, USA

mindat Locality ID: 5755
mindat URL: http://www.mindat.org/loc-5755.html

Tectonic Settings:

Total number of sublocalities beneath "Hunting Hill Quarry (Rockville Crushed Stone Quarry; Travilah Quarry; Rockville Quarry; Bardon Stone Quarry; Aggregate Industries Quarry), Rockville, Montgomery Co., Maryland, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 39°5'0"N
Longitude: 77°9'"W
Decimal Degree (lat, lon): 39.083333333333,-77.15

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	Amphibole	Apatite	Aragonite	Brochantite	Brucite	Calcite	Chalcopyrite	Chlorite	Clay
Clinozoisite	Corundum	Diaspore	Epidote	Feldspar	Garnet	Hydrotalcite	Malachite	Millerite	Molybdenite
Nickeline	None	Not in a structural group	Pentlandite	Prehnite	Pyrite	Pyroxene	Quartz	Rocksalt	Rutile
Serpentine	Spinel	Talc	Titanite	Tochilinite	Tourmaline	Vesuvianite

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 B C Ca Cr Cu F Fe H Mg Mn Mo Na Ni O P Pb S Si Ti

Elements from minerals reported directly at this locality: Al B C Ca Cr Cu F Fe H Mg Mn Mo Na Ni O P Pb S Si Ti

Structural Groups for minerals in this locality:
Amorphous Amphibole Apatite Aragonite Brochantite Brucite Calcite Chalcopyrite Chlorite Clay
Clinozoisite Corundum Diaspore Epidote Feldspar Garnet Hydrotalcite Malachite Millerite Molybdenite
Nickeline None Not in a structural group Pentlandite Prehnite Pyrite Pyroxene Quartz Rocksalt Rutile
Serpentine Spinel Talc Titanite Tochilinite Tourmaline Vesuvianite

56 IMA Minerals at location:

Actinolite ()*	Albite ()*	Anthophyllite ()*	Antigorite ()*	Aragonite ()*
Azurite ()*	Bornite ()*	Brochantite ()*	Brucite ()*	Calcite ()*
Chalcocite ()*	Chalcopyrite ()*	Chromite ()*	Chrysotile ()*	Clinochlore ()*
Clinozoisite ()*	Coalingite ()*	Desautelsite ()*	Diopside ()*	Dolomite ()*
Dravite ()*	Epidote ()*	Fluorapatite ()*	Galena ()*	Goethite ()*
Grossular ()*	Hematite ()*	Huntite ()*	Hydromagnesite ()*	Ilmenite ()*
Lizardite ()*	Magnesio-hornblende ()*	Magnesite ()*	Magnetite ()*	Malachite ()*
Mcguinnessite ()*	Millerite ()*	Molybdenite ()*	Nimite ()*	Omphacite ()*
Opal ()*	Pargasite ()*	Pentlandite ()*	Pokrovskite ()*	Prehnite ()*
Pyrite ()*	Pyrrhotite ()*	Quartz ()*	Rutile ()*	Talc ()*
Titanite ()*	Tochilinite ()*	Tremolite ()*	Vesuvianite ()*	Xonotlite ()*
Zoisite ()*

Mineral name	Structural Groups	IMA Formula	# of localities containing mineral
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	3419
Albite ()*	Feldspar	Na(AlSi₃O₈)	8803
Anthophyllite ()*	Amphibole	Mg₂Mg₅Si₈O₂₂(OH)₂	718
Antigorite ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	708
Aragonite ()*	Aragonite	Ca(CO₃)	3250
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	5509
Bornite ()*	None	Cu₅FeS₄	5516
Brochantite ()*	Brochantite	Cu₄(SO₄)(OH)₆	1633
Brucite ()*	Brucite	Mg(OH)₂	462
Calcite ()*	Calcite	Ca(CO₃)	27770
Chalcocite ()*	None	Cu₂S	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	3902
Chrysotile ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	951
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈	1756
Clinozoisite ()*	Clinozoisite Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	1025
Coalingite ()*	Hydrotalcite	Mg₁₀Fe³⁺₂(CO₃)(OH)₂₄·2H₂O	27
Desautelsite ()*	Hydrotalcite	Mg₆Mn³⁺₂(CO₃)(OH)₁₆·4H₂O	9
Diopside ()*	Pyroxene	CaMgSi₂O₆	4135
Dolomite ()*	None	CaMg(CO₃)₂	9895
Dravite ()*	Tourmaline	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	648
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	8173
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	2740
Galena ()*	Rocksalt	PbS	24243
Goethite ()*	Diaspore	FeO(OH)	7437
Grossular ()*	Garnet	Ca₃Al₂(SiO₄)₃	1544
Hematite ()*	Corundum	Fe₂O₃	14640
Huntite ()*	Not in a structural group	CaMg₃(CO₃)₄	69
Hydromagnesite ()*	None	Mg₅(CO₃)₄(OH)₂·4H₂O	341
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	5433
Lizardite ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	359
Magnesio-hornblende ()*	Amphibole	Ca₂(Mg₄Al)(Si₇Al)O₂₂(OH)₂	238
Magnesite ()*	Calcite	Mg(CO₃)	1487
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	12537
Mcguinnessite ()*	Malachite	CuMg(CO₃)(OH)₂	34
Millerite ()*	Millerite	NiS	1066
Molybdenite ()*	Molybdenite	MoS₂	5800
Nimite ()*	Chlorite Clay	(Ni,Mg,Al)₆(Si,Al)₄O₁₀(OH)₈	15
Omphacite ()*	Pyroxene	(Ca,Na)(Mg,Fe,Al)Si₂O₆	229
Opal ()*	Amorphous	SiO₂·nH₂O	2994
Pargasite ()*	Amphibole	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂	313
Pentlandite ()*	Pentlandite	(Ni,Fe)₉S₈	1512
Pokrovskite ()*	Malachite	Mg₂(CO₃)(OH)₂	9
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	1898
Pyrite ()*	Pyrite	FeS₂	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	9056
Quartz ()*	Quartz	SiO₂	61156
Rutile ()*	Rutile	TiO₂	5614
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	3337
Titanite ()*	Titanite	CaTi(SiO₄)O	4899
Tochilinite ()*	Tochilinite	6(Fe_0.9S)·5[(Mg,Fe)(OH)₂]	56
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	2562
Vesuvianite ()*	Vesuvianite	(Ca,Na)₁₉(Al,Mg,Fe)₁₃(SiO₄)₁₀(Si₂O₇)₄(OH,F,O)₁₀	1395
Xonotlite ()*	None	Ca₆Si₆O₁₇(OH)₂	109
Zoisite ()*	Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	1025

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL
R110197	Hunting Hill Quarry (Rockville Crushed Stone Quarry; Travilah Quarry; Rockville Quarry; Bardon Stone Quarry; Aggregate Industries Quarry), Rockville, Montgomery Co., Maryland, USA	https://rruff.info/R110197

All locality data graciously provided by mindat.org

All age data...