Vote for your favorite mineral in #MinCup26! - Monazite-(Ce) vs. Andalusite
It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Ballard Green Quartz Occurrence, Owings Mills, Baltimore County, Maryland, USAi
Regional Level Types
Ballard Green Quartz OccurrenceDome (Lost)
Owings MillsCensus-designated Place
Baltimore CountyCounty
MarylandState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
Latitude & Longitude (WGS84):
39° 23' 32'' North , 76° 48' 24'' West
Latitude & Longitude (decimal):
Type:
Dome (Lost) - last checked 2019
Deposit first discovered:
2014
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Randallstown32,430 (2011)3.0km
Owings Mills30,622 (2011)3.8km
Garrison8,823 (2011)4.3km
Milford Mill29,042 (2011)5.9km
Pikesville30,764 (2011)7.5km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Mindat Locality ID:
335852
Long-form identifier:
mindat:1:2:335852:1
GUID (UUID V4):
0


During housing construction beginning in the spring and summer of 2014 "tens of thousands of quartz crystal specimens" where found.
"In the early spring of 2014, the removal of trees from the site uncovered huge quartz boulders bearing numerous milky quartz crystals. By late spring, construction crews had removed enough earth to level the entire area, piling the dirt into a mound about 30 yards long, 8 yards wide, and 5 yards high. From these mounds, collectors uncovered plates of quartz bearing multiple crystals measuring to well over an inch. Most of these crystals were milky, some of them clear. Encrustations of dried clay were present on many of the specimens. A different mode of collecting began to evolve around the Fourth of July.

Richard Hoff was there the day that Jim Hooper, President of the Baltimore Mineral Society, wandered a few yards south from the dirt mound and found a single doubly-terminated quartz crystal measuring about an inch and a half. It was embedded in a two foot embankment where a road would later be cut. Almost immediately, Hoff and the other collectors who were present began digging a short distance from the embankment and eventually found more crystals. They dubbed the hole that produced them as “the Hooper pocket.”

- From the Mineral Bliss article "A Major Quartz Crystal Find in Baltimore County, Maryland", used with permission from Jake Slagle. Please see link for the full Mineral Bliss article by Jake Slagle.
http://mineralbliss.blogspot.com/2015/09/a-major-quartz-crystal-find-in.html
The site is now covered with a housing development and is private property.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


4 valid minerals.

Detailed Mineral List:

'Feldspar Group'
References:
Goethite
Formula: Fe3+O(OH)
References:
Hematite
Formula: Fe2O3
References:
'Mica Group'
References:
Pyrite
Formula: FeS2
References:
Quartz
Formula: SiO2
References:
Quartz var. Amethyst
Formula: SiO2
References:
Quartz var. Milky Quartz
Formula: SiO2
References:
Quartz var. Rock Crystal
Formula: SiO2
References:
Quartz var. Sceptre Quartz
Formula: SiO2
References:
Quartz var. Smoky Quartz
Formula: SiO2
References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Goethite4.00.Fe3+O(OH)
Hematite4.CB.05Fe2O3
Quartz
var. Amethyst
4.DA.05SiO2
4.DA.05SiO2
var. Smoky Quartz4.DA.05SiO2
var. Rock Crystal4.DA.05SiO2
var. Milky Quartz4.DA.05SiO2
var. Sceptre Quartz4.DA.05SiO2
Unclassified
'Feldspar Group'-
'Mica Group'-

List of minerals for each chemical element

HHydrogen
H GoethiteFe3+O(OH)
OOxygen
O Quartz var. AmethystSiO2
O GoethiteFe3+O(OH)
O HematiteFe2O3
O QuartzSiO2
O Quartz var. Smoky QuartzSiO2
O Quartz var. Rock CrystalSiO2
O Quartz var. Milky QuartzSiO2
O Quartz var. Sceptre QuartzSiO2
SiSilicon
Si Quartz var. AmethystSiO2
Si QuartzSiO2
Si Quartz var. Smoky QuartzSiO2
Si Quartz var. Rock CrystalSiO2
Si Quartz var. Milky QuartzSiO2
Si Quartz var. Sceptre QuartzSiO2
SSulfur
S PyriteFeS2
FeIron
Fe GoethiteFe3+O(OH)
Fe HematiteFe2O3
Fe PyriteFeS2

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 7, 2026 01:43:27 Page updated: October 26, 2025 12:10:40
Go to top of page