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

Deweylite
Hunting Hill quarry, Rockville, Montgomery Co., Maryland, USA

Photo: 2009, JGW
Latitude: 39°5'N
Longitude: 77°9'W
Serpentinite with dikes of rodingite.



Mineral List

Actinolite
Albite
'Albite-Anorthite Series'
Anthophyllite
Antigorite
Aragonite
Azurite
'Biotite' ?
Bornite
Brochantite
Brucite
Calcite
Chalcocite
Chalcopyrite
Chromite
Chrysocolla ?
Chrysotile
Clinochlore
Clinozoisite
Coalingite
Desautelsite
'Deweylite'
Diopside
var: Chromian Diopside
Dolomite
Dravite
Epidote
Fluorapatite
Galena
Goethite
Grossular
Hematite
Huntite
'Hydrogrossular'
Hydromagnesite
Ilmenite
'Limonite'
Lizardite
Magnesite
Magnetite
Malachite
'Manganese Oxides
var: Manganese Dendrites'

Mcguinnessite
Millerite
Molybdenite
Nimite
'Olivine'
Omphacite
Opal
Palladium ?
Pargasite
Pentlandite
Platinum ?
Pokrovskite
Prehnite
Pyrite
Pyrrhotite
Quartz
var: Chalcedony
Rutile
Talc
Titanite
Tochilinite
'Tourmaline'
Tremolite
Vesuvianite
Xonotlite
Zoisite
var: Thulite


69 entries listed. 58 valid minerals.

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References

Rocks & Minerals: 347.

Parker, F. (2005), The Minerals of the Hunting Hill Quarry, Rockville, Maryland; Mineralogical Record 35: 435-446.

Minerals of the Washington D.C. Area.

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Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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