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A mineralogical trip through the states of USA - Maryland
  
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Jordi Fabre
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PostPosted: Dec 29, 2010 10:31    Post subject: A mineralogical trip through the states of USA - Maryland  

Maryland the "Old Line State"



We recommend this Web Page of Jake Slagle with very nice images of the minerals of Maryland



Grossular garnet Hunting Hill Quarry Maryland USA.jpg
 Description:
Grossular on Calcite
Hunting Hill Quarry, Rockville, Montgomery Co., Maryland, USA
4.5 cm x 2 cm; garnet is 0.5 x 0.5 cm.
Collected by Jessica Simonoff
Photo: Jessica Simonoff

This Grossular was published by Jessica Simonoff in her thread of her own collection ( http://www.mineral-forum.com/message-board/viewtopic.php?t=886 )

Thanks Jessica!
 Viewed:  31680 Time(s)

Grossular garnet Hunting Hill Quarry Maryland USA.jpg


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PostPosted: Dec 29, 2010 13:53    Post subject: Re: A mineralogical trip through the states of USA - Maryland  

It may not be generally known but Maryland has the type locality for carrollite, the Patapsco copper mines, Carroll County. The actual type specimen, it is believed, was housed at the Maryland Academy of Sciences in Baltimore. Many years ago the Academy decided the mineral collectioin was no longer relevant and they threw it away on a city dump. A couple of local collectors found out about this and they were able to salvage some of the specimens, without labels, but the type specimen of carrollite was lost forever. What a shame.
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PostPosted: Dec 29, 2010 15:04    Post subject: Re: A mineralogical trip through the states of USA - Maryland  

Here's another Maryland specimen....


Hydromagnesite 2.JPG
 Description:
Hydromagnesite
Rockville, Maryland
Probably from Hunting Hill Quarry
Main crystal is 2 mm tall.
 Viewed:  31592 Time(s)

Hydromagnesite 2.JPG



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PostPosted: Dec 29, 2010 19:36    Post subject: Re: A mineralogical trip through the states of USA - Maryland  

Not a great picture of a very white calcite, with a old Parker Minerals label. They where out of Columbia, MD


DSCN0462.JPG
 Description:
Calcite
Medford Quarry,
Carroll Co., MD
4.2cm x 3.3cm
 Viewed:  31490 Time(s)

DSCN0462.JPG


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PostPosted: Jan 09, 2011 23:34    Post subject: Re: A mineralogical trip through the states of USA - Maryland  

It took me nearly an hour of scanning under the scope to locate and then capture a photomicrograph (about 30x) showing evidence of crystalization on this very rough 7cm. x 5 cm. x 4 cm. carrollite bearing rock from the now closed and filled in Patapsco Mine in Carroll County, Maryland.


carrollitemicro1.jpg
 Description:
 Viewed:  31224 Time(s)

carrollitemicro1.jpg



carrollitepatapsco1.jpg
 Description:
 Viewed:  31228 Time(s)

carrollitepatapsco1.jpg


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PostPosted: Jan 10, 2011 03:21    Post subject: Re: A mineralogical trip through the states of USA - Maryland  

Hi Jake, welcome to FMF, and thank you so much to download this Carrollite to ilustrate the comment of John White -> https://www.mineral-forum.com/message-board/viewtopic.php?p=14891#14891

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PostPosted: Nov 28, 2011 06:00    Post subject: Re: A mineralogical trip through the states of USA - Maryland  

Since Maryland has been under represented, here are some that I have collected myself.


dravite - Texas q., Balt. Co. 12-5-6 7 cm across.JPG
 Description:
Dravite in marble
Texas quarry, Baltimore Co., Maryland, USA
6 cm across
 Viewed:  29396 Time(s)

dravite - Texas q., Balt. Co. 12-5-6 7 cm across.JPG



epidote - Maryland Materials q., Cecil Co. 8-5-4 8 cm across.JPG
 Description:
Epidote
Maryland Materials quarry, North East, Cecil Co., Maryland, USA
8 cm across
 Viewed:  29355 Time(s)

epidote - Maryland Materials q., Cecil Co. 8-5-4 8 cm across.JPG



schorl - Maryland Materials q., North East, Cecil Co. 6-6-18.JPG
 Description:
Schorl in schist
Maryland Materials quarry, Cecil Co., Maryland, USA
The crystal is 6 cm tall
 Viewed:  29378 Time(s)

schorl - Maryland Materials q., North East, Cecil Co. 6-6-18.JPG



stillbite - Maryland Materials q., North East, Cecil Co. 8-6-1-2.JPG
 Description:
Stilbite in quartz
Maryland Materials quarry, Cecil Co., Maryland, USA
6 cm across
 Viewed:  29329 Time(s)

stillbite - Maryland Materials q., North East, Cecil Co. 8-6-1-2.JPG



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PostPosted: Dec 31, 2011 11:22    Post subject: Re: A mineralogical trip through the states of USA - Maryland  

A new adition for Maryland published by Jessica Simonoff in this post of her thread Jessica's mineral collection


Grossular - Hunting Hill Quarry_Rockville,_Maryland_USA.jpg
 Description:
Grossular
Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA
6x6x6 cm.
Photo & specimen: Jessica Simonoff
 Viewed:  29121 Time(s)

Grossular - Hunting Hill Quarry_Rockville,_Maryland_USA.jpg


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PostPosted: Jan 16, 2012 02:15    Post subject: Re: A mineralogical trip through the states of USA - Maryland  

A Maryland field trip.
After a VA fossil collecting trip, my son Jay and I were taken by long time friend Ken Boulier (recently deceased) to a John White talk to members of my old Baltimore club, Chesapeake Gem & Mineral Society. Club members asked us to join them on a trip the next day to La Farge quarry in Medford, MD, which was on our way home. After collecting at several sites at different parts of the quarry, we were taken to a new blast area. When we got there, the whole blast, which was a large heap the day before, had disappeared into a hole (sink hole or large calcite pocket?). We were not allowed to go into the hole, but collected some large, mainly ugly, calcite crystals up to 10 pounds or so in a mud zone along the side of the sunken blast. We did not have a UV light at the site, but some of the calcite cleavages we brought home were shown to fluoresce a very nice pinkish-red. The photo I'll try to attach was taken with a stronger short wave UV light than I usually use (weaker one was being repaired) so the color is somewhat more red than usual (digital photo).



2010 09 22 misc.coll.etc. 007.JPG
 Description:
Calcite
La Farge quarry, Medford, Maryland, USA
7 cm
 Viewed:  28882 Time(s)

2010 09 22 misc.coll.etc. 007.JPG



2010 09 22 misc.coll.etc. 008.JPG
 Description:
Calcite cleavage
La Farge quarry, Medford, Maryland, USA
7 cm
 Viewed:  28868 Time(s)

2010 09 22 misc.coll.etc. 008.JPG



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PostPosted: Dec 30, 2012 20:57    Post subject: Re: A mineralogical trip through the states of USA - Maryland  

Specimen measures 7.4 cm. x 5.2 cm. x 2.4 cm. The pink erythrite is on a matrix of talc. I'm not aware of erythrite ever having been officially reported from this now off-limits locality, which has produced more different species than any other locality in the state. Joe Dague obtained the specimen from Jay Lininger, who purchased it from Fred ...


erythritehh.jpg
 Description:
Erythrite on Talc
Hunting Hill Quarry, Rockville, Montgomery Co., Maryland, USA
7.4 cm. x 5.2 cm. x 2.4 cm.
I'm not aware of erythrite ever having been officially reported from this now off-limits locality, which has produced more different species than any other locality in the state. Joe Dague obtained the specimen from Jay Lininger, who purchased it from Fred Schaefermyer, who collected it sometime in the late 1980's It is now in my personal Maryland collection.
 Viewed:  26786 Time(s)

erythritehh.jpg


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PostPosted: Dec 30, 2012 21:13    Post subject: Re: A mineralogical trip through the states of USA - Maryland  

Here's another piece from my Maryland Collection


molybdenite.jpg
 Description:
Molybenite with Galena and Stilbite
Jones Falls Quarries, Baltimore, Maryland, USA
7.3 cm. x 4.9 cm. x 3 cm.
Molybenite with Galena and Stilbite on Gneiss. Collected by Walter E. Price in 1934. The Jones Falls Quarries produced the first molybdenite to be reported in the United States.
 Viewed:  26805 Time(s)

molybdenite.jpg


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PostPosted: Nov 07, 2013 14:15    Post subject: Re: A mineralogical trip through the states of USA - Maryland  

Former collections of Columbia Univ, AMNH and Eugene Carmichael


IMG_9461a.jpg
 Description:
Siderite
Jones Falls Quarries, Baltimore, Maryland, USA
8.0cm x 5.4cm
 Viewed:  25143 Time(s)

IMG_9461a.jpg


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