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• TOPAZ

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  Alto Dale Farm, Cradocks Lane and Reisterstown Road (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• IRIDESCENT SIDERITE

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  Arbutus Canyon (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• ALLANITE

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  Arundel Quarry (Baltimore County), Joseph F. Schreiber collection, Jake Slagle photographer

  

• ALMANDINE (Garnet Group)

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  Arundel Gneiss Quarry (Baltimore County), John S. White Collection, John S. White photographer

  

• ALMANDINE (Garnet Group)

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  Arundel Gneiss Quarry (Baltimore County), Joseph F. Schreiber collection, Jake Slagle photographer

  

• CHALCEDONY

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  Bare Hills Serpentine Barrens (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• CHROMITE

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  Bare Hills (Baltimore County), Harvard Mineralogical Museum Collection, Jake Slagle photographer

  

• SEPIOLITE (Meerschaum)

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  Bare Hills Serpentine Barrens (Baltimore County), Natural History Society of Maryland Collection, Jake Slagle photographer

  

• ALMANDINE (Garnet Group)

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  Blue Mount Trap Quarry (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• BRUCITE

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  Blue Mount Trap Quarry (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• Goethite

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  The Caves Orebanks, Photograph by Jake Slagle

  

• Hematite

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  Abandoned Iron Pit nr. Blue Mount, Collected by Bernie Emery, Photograph by Jake Slagle

  

• DRUSY QUARTZ

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  I -70 Construction, North Side (Baltimore County), Bob Eberle Collection, Jake Slagle photographer

  

• TREMOLITE

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  Gilmor Quarry (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• TREMOLITE

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  Gilmor Quarry (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• BERYL

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  GREENSPRING (McMahon) Quarry (Baltimore County ), Jake Slagle Collection, Jake Slagle photographer

  

• GARNET, SCAPOLITE

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  GREENSPRING (McMahon) Quarry (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• GOETHITE AND QUARTZ

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  GREENSPRING (McMahon) Quarry (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• ALMANDINE (Garnet Group)

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  Hollofield Quarry (Baltimore County), Joseph F. Schreiber collection, Jake Slagle photographer

  

• ENSTATITE

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  Hollofield Quarry (Baltimore County), Natural History Society of Maryland Collection, Jake Slagle photographer

  

• PYRITE

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  Near Valley View Farms (Baltimore County), John Vanko Collection , Jake Slagle photographer

  

• ILMENITE

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  near Liberty Reservoir (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• SPHENE

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  Milford Trap Quarry Baltimore County, Maryland Natural History Society of Maryland Collection Jake Slagle Photographer

  

• RUTILE

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  West Loch Raven Reservoir (Baltimore County), Jake Slagle photographer

  

• FLUORAPATITE

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  GREENSPRING (McMahon) Quarry (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• ALMANDINE (Garnet Group)

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  McComas Ore Banks, nr. Bluemount (Baltimore County), Fred Parker Collection, Jake Slagle photographer

  

• CHLORITE (Rosetted Crystals)

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  Milford Trap Quarry Baltimore County Natural History Society of Maryland Collection Jake Slagle: Photographer

  

• CLINOZOISITE

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  Milford Trap Quarry Baltimore County, Maryland Natural History Society of Maryland Collection Jake Slagle Photographer

  

• KAOLINITE

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  Milford Trap Quarry Baltimore County, Maryland Natural History Society of Maryland Collection Jake Slagle Photographer

  

• LAUMONTITE

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  Milford Trap Quarry Baltimore County, Maryland Natural History Society of Maryland Collection Jake Slagle Photographer

  

• MOLYBDENITE

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  Milford Trap Quarry, Baltimore County, Maryland Natural History Society of Maryland Collection Jake Slagle: Photographer

  

• PREHNITE

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  Milford Trap Quarry Baltimore County, Maryland Natural History Society of Maryland Collection Jake Slagle Photographer

  

• PYRRHOTITE

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  Milford Trap Quarry Baltimore County, Maryland Natural History Society of Maryland Collection Jake Slagle Photographer

  

• SCOLECITE

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  Milford Trap Quarry Baltimore County, Maryland Natural History Society of Maryland Collection Jake Slagle Photographer

  

• TABULAR QUARTZ

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  Nash Farm (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• ALMANDINE (Garnet Group)

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  Construction Rt. 795, Owings Mills (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• GOETHITE

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  Oregon Ridge near Hunt Valley (Baltimore County), Bob Eberle Collection, Jake Slagle photographer

  

• ZOISITE

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  Powder Mill Shaft (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• KYANITE

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  Near Reisterstown (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• ANTIGORITE (var.)PICROLITE

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  Soldiers Delight (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• ARFVEDSONITE XLS. in quartz

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  Delight Quarry, Soldier's Delight (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• CHROMIAN CLINOCHLORE

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  Soldiers Delight (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• QUARTZ

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  Soldiers Delight (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• CHALCOPYRITE on CALCITE

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  Texas Quarry nr. Cockeysville (Baltimore County), Fred Parker Collection, Jake Slagle photographer

  

• DRAVITE (Tourmaline Group)

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  Texas Quarry nr. Cockeysville (Baltimore Couny), Fred Parker Collection, Jake Slagle photographer

  

• FLUORAITE, DOLOMITE

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  Texas Quarry nr. Cockeysville (Baltimore County), Natural History Society of Maryland Collection, Jake Slagle photographer

  

• PHLOGOPITE

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  Texas Quarry nr. Cockeysville (Baltimore County), Bob Eberle Collection, Jake Slagle photographer

  

• SCAPOLITE

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  Texas Quarry nr. Cockeysville (Baltimore County), Joseph F. Schreiber collection, Jake Slagle photographer

  

• SCAPOLITE

  http://marylandminerals.com/wp-content/uploads/2016/08/balttexscap1.jpg

  Texas Quarry nr. Cockeysville (Baltimore County), Jake Slagle Collection, Jake Slagle photographer

  

• PYRITE

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  Texas Quarry nr. Cockeysville (Baltimore County), Jake Slagle photographer

  

• SPHENE (Titanite)

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  Texas Quarry nr. Cockeysville (Baltimore County), Natural History Society of Maryland Collection, Jake Slagle photographer

  

• PYROMORPHITE

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  Western Baltimore County (Baltimore County), Fred Parker Collection, Jake Slagle photographer