Rock Collection
of James Stuby

List updated February 2015
Specimens listed in order of collection date.
Click on links to see images of most specimens and some of the outcrops from which they came.

Photo

Code

Date Collected

Rock Type

Notes

-

1993

Phacops rana
trilobites
(low-res photos
hi-res photos)

Collected during Juniata College Palaeontology field trip to outcrop of Middle Devonian Mahantango Formation, Milesburg, Pennsylvania, Fall Semester, 1993, run by Dr. Kieth Mann.

-

1993

tabulate coral

Collected during Juniata College Palaeontology field trip to Illinois, Indiana, and Ohio, Fall Semester, 1993, run by Dr. Kieth Mann. Both probably Ordovician.

-

1993

bryozoan

-

1994

plant fossil

Collected during Juniata College Historical Geology field trip to abandoned coal mine probably of Pennsylvanian rocks, probably in the Broad Top area of Huntingdon County, Pennsylvania, Spring Semester, 1994, run by Dr. Kieth Mann.

-

1994 or '95

tabulate coral

Probably collected during an archaeological excavation in the State College, Pennsylvania, area.

j1

1997

sandstone with slickenlines

Ordovician Juniata Formation, Bald Eagle Mountain, rt. 322, Pennsylvania

dp1

6-6-1997

triphylite (radioacitve)

Dan Patch pegmatite, Black Hills, South Dakota
GPS 43.894985,-103.44233

dp2

"

perthite feldspar
(scanned clevage plane or photo)

dp3

"

quartz

dp4

"

garnet schist

dp5

"

muscovite and quartz

dp6

"

dendritic triphylite

dp7

"

lepidolite

we1

6-7-1997

rose quartz

White Elephant pegmatite, Black Hills, South Dakota
GPS 43.655647,-103.583372
photo of mine, facing east
photo of radiating tourmaline
photo of radiating lepidolite

we2
we3

"

graphic granite
(scanned section or side view)

we4

"

tourmaline and quartz

we5

"

tourmaline and lepidolite

we6

"

amphibole schist

we7

"

swallowtail lepidolite

we8

"

tcc1

6-8-1997

obsidian

Tomahawk Country Club volcano, rt. 385, South Dakota
GPS 43.655167,-103.583667

hs1

6-8-1997

phyllite

Poorman Formation, truck rt. 85 near Lead, Wyoming

hs2
hs3

"

porphyry (Laramide)

with dendritic manganese dioxide, truck rt. 85 near Lead, Wyoming

spc1

6-9-1997

dolomite and chert

Ordovician Bighorn Dolomite from South Piney Creek Trail near Story, Wyoming

w1

"

scoria

Sundance Formation, near exit 136, I-90, Wyoming
GPS 44.289667,-103.678333

eb1

6-17?-1997

gypsum

Elk Basin, Montana-Wyoming border
(axis of Elk Basin anticline, facing north, and west limb of anticline, facing north)

eb3

6-18?-1997

ammonite fossil

eb2

6-19?-1997

sulphur

wm1

6-21-1997

breccia (cataclasite)

Glide plane fault breccia from White Mountain, Sunlight Valley, Wyoming
Here is an external link to a photo of the outcrop taken by someone else when I was there, possibly Doc Hoover. The person in the photo is Rick Henry.
GPS 44.284333,-105.376667

sw1

6-24-1997

chromatite with bronzite phenocrysts
(another angle)

Stillwater Igneous Complex, near Nye, Montana, a Pliocene layered igneous intrusion.

sw2

"

"JM reef"

sw3

"

?

sw4

"

chromatite (?)

sw5
sw6
sw7
sw8
sw9

"

granitic core fragments
(from spoil pile)

wfa1

6-24-1997

olivine (chadocrysts) & bronzite (oikocryst)

West Fork Adit, near Stillwater Igneous Complex, Montana

bpo1

6-25-1997

migmatite (ophiolite)

Beartooth Plateau, Beartooth Highway, Montana
GPS 44.751833,-109.511833

bpo2

"

porphyry (Laramide)
(see also these euhedral crystals that I picked out of a more friable rock of the same composition)

lcc1

7-9-1997

siltstone and pyrite

Cambrian (?) Mineral Forks Fm., between Cardiff Peak and Boundary Peak, Little Cottonwood Canyon, Utah

lcc2

7-9-1997

as4

7-16?-1997

copper-rich rock
(another view)

Big Cottonwood Mine near Alta Stock, Little Cottonwood Canyon, Utah

as1

7-17-1997

granodiorite

Alta Stock, Little Cottonwood Canyon, Utah

as2

7-18-1997

bedded skarn
(other side)

Cambrian Maxfield Fm.(?) near the Alta Stock, Little Cottonwood Canyon, Utah. The green crystals are garnets, probably grossularite.

as3

"

skarn with serpentine

from edge of Alta Stock, Little Cottonwood Canyon, Utah

bcm1

7-23-1997

contains chalcopyrite

Bingham Copper Mine, Utah
GPS 40.53,-112.14

bcm2

"

contains molybdenite

bcm3

"

skarn with geode

bcm4

"

?

is1

"

basalt

Holocene Ice Springs volcanic, Marysvale volcanic district, Utah

jl1

7-24-1997

tuff

Joe Lott Tuff, Marysvale volcanic district, Utah
(outcrop photo)

bcv1

"

andesite

Bullion Canyon volcanics, Marysvale volcanic district, Utah

bcv2

"

andesite

joh1

10-24-1997

bark cast fossil in sandstone

Pennsylvanian outcrop on US Rt. 35, near County Road 84 near Jackson, Ohio
(outcrop photo)

srg1

12-26-1997

conglomeratic quarzite

Silurian Tuscarora Formation, Sweet Route Gap, Bedford County, Pennsylvania

ops1

2-28-1998

packstone

Ordovician Kope Formation, Ohio

-

2-28-1998

Platystrophia sp.
brachiopod

Ordovician brachiopod collected on WSU Palaeonotolgy Field Trip run by Dr. Cindy Carney, Winter Quarter, 1998.

op1

3-23-1998

andesite porphyry

Bedrock on O'Leary Peak (hill on left in photo), near Sunset Crater, Arizona
GPS 35.40119,-111.5267

sm1

3-25-1998

granite pegmatite

Sacaton Mtns., Arizona

sm2

"

graphic granite

sm3

"

granite and aplite

sm4

"

granite

hb1

5-15-1998

dismicrite limestone

Ordovician Tyrone Limestone, High Bridge Group, US rt. 27, Kentucky

hb2

"

bryozoan (?)

mhc1

6-24-1998

grainstone

Pleistocene Grotto Beach Fm., Man Head Cay, San Salvador, Bahamas. Probably the cast of a crab burrow. Crossbedding preserved.
Outcrop photo on east side of the island.

tx1

8-29-1998

llanite (granite)

From llanite dike on Rt. 16, Between Baby Head and Llano, Texas. (The only outcrop of llanite in the world?)

tn1

9-5-1998

folded siltstone with tool marks
(top, bottom)

shale outcrop (photo 1, photo 2), MM 17 on I-75, Tennessee

joh2

10-16-1998

plant fossil in sandstone

Pennsylvanian outcrop on US Rt. 35, near County Road 84 near Jackson, Ohio
(outcrop photo)

ky1

10-17-1998

ironstone

Mississippian Breathitt Fm., MM 166, I-64, Kentucky

ky2

"

Zoophycos in sandstone

turbidites at MM ~45, I-64, Kentucky
(outcrop photo)

ah1

10-17-1998

dolostone with blastoid fossils
(section)

Mississippian Reelsville-Beech Creek Mbr., Newman Limestone (Armstrong Hill Section), rt. 2, Kentucky
(outcrop photo)

ec1

"

mudstone and chert

Stratigraphically below Carter Cave Sandstone at Echo Canyon, Kentucky

-

2-1999

rugose coral

Ordovician Kope Formation (?). Collected by some student on WSU Palaeontology Field Trip, and left in Dr. Carney's lab. Etched transverse section.

nj1

2-27-1999

gneiss

Precambrian Byram Gneiss, northern New Jersey

nj2

ob1

4-10-1999

bryozoan (Hallopora?)

southern Ohio (Ordovican)

gg1

"

diamictite (tillite)

Gaugunda Fm. (transported by glacier from outcrop in Canada to Ohio)

ai1

6-12?-1999

Lucina pectinata

Pleistocene pelecypod from North Andros Island, Bahamas

ai2

6-13-1999

Montastrea cavernosa

Holocene coral from lagoon in front of Forfar Field Station, North Andros Island, Bahamas

tg1

6-16-1999

grainstone with paleosol

Pleistocene Grotto Beach Formation, the Gulf, San Salvador Island, Bahamas

mr1

6-30-1999

porphyritic rhyolite

Proterozoic Mount Rogers Formation, from summit of Mt. Rogers, highest point in Virginia

ky3

8-13-1999

dolomitic siltstone

From I-71, exit 28, Kentucky. Distinct bioturbation; possibly Upper Ordovician Saluda Dolomite.

ky4

"

dolomitic siltstone

ky5

"

dolomitic siltstone

bg1

8-17-1999

crossbedded peloidal (?) grainstone

North side of Rt. 211, Harrison Co., Indiana, <1 mile west of intersection with Rt. 111. Mississippian Sanders Group or Upper Borden Group

bg2

"

packstone with stylolite

bg3

"

coral

bg4

"

limestone (with stylolite)

bg5

"

packstone

bc1

12-22-1999

Grainstone with Diplocraterion (trace fossil)

Silurian Tonoloway Limestone or Devonian Keyser Limestone, near intersection of US Rt. 30 and SR 4022 (Point Rd.), Bedford Co., Pennsylvania
Video on this outcrop on Youtube

sr1

1-1-2000

diabase

Triassic Stony Ridge dike (diabase) and Ordovician St. Paul Group country rock (limestone), north side of I-76 (Pennsylvania Turnpike), MM 229.2
GPS 40.221289,-77.102882
(outcrop photo)

sr2

"

limestone

bm1

3-17-2000

epidote?

Late Proterozoic Catoctin Formation, Braddock Mountain, north side of I-70, MM 47.1, Frederick Co., Maryland
GPS 39.444827,-77.500842
(outcrop photo)

bm2

"

chlorite schist?

bm3

"

quartz / ?

bm4

"

feldspar

bm5

"

quartz

wc1

4-16-2000

granodiorite (gneiss?)

Lower Paleozoic Wissahickon Fm., Fairmont Park, Philadelphia, Pennsylvania. Schist is from intersection of Bells Mill Rd. and Wissahickon Creek bike path in Serpentinite zone of Germantown Geological Quad. Granodiorite found on the ground approx. 100 m north of the intersection.
GPS 40.078925,-75.226682
outcrop photo for wc2

wc2

"

schist with clast (epidote?)

cc1

5-16-2000

interbedded limestone and dolomite

Upper Cambrian Conococheague Limestone, I-70, MM 20.5, Washington Co., Maryland
(dolomite is lighter than the limestone in etched sections)
GPS 39.650674,-77.868326

cc2

"

interbedded limestone and dolomite

mc1

8-20-2000

quartz-pebble conglomerate

Devonian Foreknobs Formation, Rt. 994, near northern side of bridge going over Raystown Lake, Huntingdon Co., Pennsylvania.
outcrop photo

sd1

9-24-2000

serpentine
(serpentineite?)

Early Paleozoic or Late Proterozoic ultramafics from Soldiers Delight Natural Area (Serpentine Grasslands), Baltimore Co., Maryland

sd2

ki1

11-10-2000

limestone

Devonian Columbus Limestone from a quarry on Kelly's Island, Ohio, in Lake Erie.

mh1

3-4-2001

chert

Jurassic-Cretaceous Franciscan Complex. mh1 from Marin Headlands, Marin County, California. mh2 from Twin Peaks, San Francisco, California.

mh2

3-3-2001

chert

ym1

3-5-2001

granodiorite with diorite xenoliths

Cretaceous Yosemite Valley Intrusive Suite, found in a moraine along CA Rt. 140 in Yosemite National Park, California.
GPS 37.721781,-119.699049

ab1

3-7-2001

granodiorite
(another view)

Cretaceous Granodiorite, from outcrop in intertidal zone of Asilomar State Beach, Monterey County, California.

bs1

3-8-2001

breccia

Outcrop along Valley View Trail, Pfeiffer Big Sur State Park, Monterey County, California

pt1

3-10-2001

breccia/tuff

Miocene Pinnacles Formation (23.5MYA). Outcrop along Juniper Canyon Trail, Pinnacles National Monument, San Benito County, California

pt2

"

rhyolite

cmd1

4-1-2001

metadolostone

Massive Metadolostone Mbr. of Cockeysville Formation, from old quarry near Lower Dam of Loch Raven Reservoir, Baltimore County, Maryland.

hg1

4-7-2001

albite-chlorite schist

Lower Paleozoic Wissahickon Schist (Albite-Chlorite Schist Member), from Holtwood Gorge along Susquehanna River, Lancaster County, Pennsylvania.

rh1

5-27-2001

carbonaceous conglomerate

Silurian Wills Creek Formation from Roundtop Hill, near Hancock, Maryland. Contains imbricated flat pebbles.

bc2

6-10-2001

sandstone

Devonian Catskill Formation, from outcrop along I-70 south of Breezewood, Bedford Co., Pennsylvania. Contains plant fossils.

bc3

8-5-2001

grainstone

Carbonaceous sanstone bed of Ordovician Reedsville Shale from along PA Rt. 36 near Loysburg, Bedford Co., Pennsylvania. Soft-sediment deformation is evident. Contains sparse fossils (black in section image) - probably brachiopods and bryozoans. (photo with enhanced contrast)
GPS 40.165658,-78.37404

-

10-20-2001

coral growing on bivalve

Collected from the Pliocene Yorktown Formation during the 31st Virginia Field Geological Conference, entitled Post-impact effects of the Eocene Chesapeake Bay Impact, lower York-James Peninsula, Virginia, held near Williamsburg, Virginia

bc4

11-25-2001

quartz sandstone

Outcrop along US Rt. 30, where Everett Bypass intersects Warrior Ridge, Bedford Co., Pennsylvania.
bc4 is Devonian Ridgely Member of Old Port Formation, contains brachiopod casts and a stylolite.
bc5 and bc6 are Silurian-Devonian Corriganville-New Creek Limestone.
bc7 is probably the upper part of the Ridgely Member.
GPS 40.027333,-78.370667

bc5

3-8-2002

limesone and chert

bc6

"

limestone and chert

bc7

"

conglomerate

mm1

4-28-2002

carbonate mudstone

From Martin Mountain roadcut, MM 52.5, I-68, Maryland. Contains mud cracks.

lcc3

5-5-2002

quartzite

From north side of Little Cottonwood Canyon, near Alta, Salt Lake Co., Utah. lcc3 is the Cambrian Tintic Formation, and lcc4 is the Ophir Formation.

lcc4

"

siltstone

ju1

5-6-2002

rhyolite (?) porphyry

From dike on the west side of Salt Creek Canyon Road (FR048), south of the intersection with Pole Canyon Road, northeast of Nephi, Juab Co., Utah.
GPS 39.740046,-111.712332

cr1

5-6-2002

rhyolite?

Tertiary volcanic rock from about MM 46, rt. 24, Wayne Co., Utah

cr2

5-7-2002

basalt

From Capitol Reef National Park, Wayne Co., Utah. cr2 is Tertiary basalt. cr3 is Cretaceous Dakota Sandstone from the "Oyster Reef". cr4 and cr5 are from the Triassic Moenkopi Formation outcropping near Panorama Point. cr4 has ripple marks, and cr5 is erroded by rain into an interesting pattern. Click here for a 3D image of cr5.

cr3

"

oyster fossil in sandstone

cr4

"

red sandstone

cr5

"

red sandstone

mq1

6-29-2002

calcite
(stereo photo)

From Medford Quarry, Carroll Co., Maryland. The calcite in this quarry contains Niobium, which gives some of the crystals a purplish color, such as that of mq3.
(photo of quarry)

mq2

"

calcite

mq3

"

calcite with Niobium

fk1

7-27-2002

fossiliferous sandstone

Middle Devonian Foreknobs Formation containing abundant Mucrospirifer sp. brachiopods, from near upper Reservoir of Bath County Pumped Storage Facility of Dominion Power, Bath County, Virginia.

cq1

10-14-2002

sandstone with muddy clasts

Devonian Catskill Formation from the Coleman Quarry of the Endless Mountain Stone Company, Susquehanna County, Pennsylvania. Collected during the 67th Annual Field Conference of Pennsylvania Geologists, which was entitled From Tunkhannock to Starrucca: Bluestone, Glacial Lakes, and Great Bridges in the "Endless Mountains" of Northeastern Pennsylvania

lvm1

8-1-2003

rhyolite porphyry

From moraine covering Lake View Campground overlooking Twin Lakes, south of Leadville, Colorado. Porphyry contains quartz and feldspar phenocrysts.
(scale bar=1cm in photo)

pw1

8-2003

petrified wood

Collected from Tertiary surficial deposits within Former Laury Bombing Range, east of Denver, Colorado

pw2

wq1

8-8-2003

sandstone

Permian (?) Flatiron Formation from abandoned Woods Quarry, in Flatiron Mountains west of Boulder, Colorado

fp1

9-26-2003

granite

Fairlee Pluton, Vermont. 54th Highway Geology Symposium fieldtrip.
fp1 is from MM 92.5 along I-91, which was stop 1
fp2 was from stop 2

fp2

"

granite with aplite vein

bpg1

"

granite

Devonian Barre Granite from E. L. Smith Quarry of the Rock of Ages Stone Company, Graniteville, Vermont. 54th Highway Geology Symposium fieldtrip, stop 3
bpg3 (three pieces) is from a schist roof pendant within the pluton.

bpg2

"

diorite

bpg3a
bpg3b
bpg3c

"

schist
(outcrop photo)

key1

10-2-2003

limestone with brachiopod

Devonian Keyser Limestone (possibly Tonoloway Fm.) along Rt. 22, Blair Co., Pennsylvania. Radargeology Field Trip Stop 2

key2

10-3-2003

crinoid-rich limestone

Devonian Keyser Limestone, collected on 68th Annual Field Conference of Pennsylvania Geologists field trip
key2, key3, key4 from Old Eldorado Quarry, I-99/US220 Mile Marker 30, Blair Co.
key5 from New Enterprise New Paris Quarry, Bedford Co.

key3

"

Stromatoporoid

key4

"

Stromatoporoid

key5

"

Bryozoan or coral?
(possible cast of coral surface

lb1

4-17-2004

limestone conglomerate

Triassic conglomerate from Culpepper Basin, collected at roadcut northwest of Leesburg, Virginia

dbq1

8-17-2004

diabase

Triassic (?) diabase dikes intruding into Ordovician Epler Formation (limestone) in the Burkholder Quarry, Martin Limestone Company, New Holland, Pennsylvania.
dbq1 from south wall (closeup)
dbq2 from north wall (closeup of contact, diabase on top)

dbq2

st1

12-21-2004

pyrite-rich sandstone

Ordovician Bald Eagle Sandstone from Skytop roadcut (US 322/I-99), collected during the Conference on Principles of Acid Pollution Control Along Highways. The rocks were collected from the area under the bridge in the left of this outcrop photo.

st2

ky6

12-30-2004

sandstone with hematitic concretion
(photo, another angle, another angle)

Mississippian or Pennsylvanian sandstone from the vicinity of Gray's Arch in the Natural Bridges/Red River Gorge area of Daniel Boone National Forest in east-central Kentucky

abd1

7-28-2005

granite

granitic rock from pegmatitic dike containing euhedral garnets near western border of Anza-Borrego State Park, rt 78 East of Banner, California.
(outcrop photo)

pr1

3-11-2006

muscovite

From what is probably an abandoned borrow pit on a trail on the northeast side of the Patapsco River less than 100 meters north of I-70, Baltimore County, Maryland

pr2

"

pegmatite

rwb1

6-2007

Acropora palmata (coral)

Acropora palmata skeletal fragment from Pleistocene coral rock of the Middle Reef Terraces, Royal Westmoreland Golf Resort, Barbados.
GPS 13.214968,-59.631312

cfc1

8-6-2008

partially melted shale "clinker"
(another view)

Partially melted shale clinker of the Pennsylvanian Conemaugh Formation, from an outcrop on the southeast side of MD Route 36, between Barton and Lonaconing in Allegany County, Maryland, roughly along the axis of the George's Creek Syncline
GPS 39.536794,-79.005625

tx2

8-1-2011

"black microgranite"

From roadcut through the Red Bluff Granite Complex on Transmountain Road, which cuts through the Franklin Mountains near El Paso, Texas.
Outcrop photo
Video of the outcrop on Youtube

tx3

"

polymict conglomerate

From alluvial fan on east side of Franklin Mountains, Texas (near Castner Range)

lgp1

10-19-2012

polymictic conglomerate
(another view)

Cobble of Silurian Shawangunk Formation from Lehigh Gap, Pennsylvania, with both quartz and chert pebbles. Collected during 77th Annual Field Conference of Pennsylvania Geologists, entitled Journey along the Taconic Unconformity, Northeastern Pennsylvania, New Jersey, Southeastern New York (Stop 3)

nj3

10-20-2012

phonolite

Ordovician Beemerville Complex in northern New Jersey, visited on the 77th Annual Field Conference of Pennsylvania Geologists, entitled Journey along the Taconic Unconformity, Northeastern Pennsylvania, New Jersey, Southeastern New York (Stop 7)
nj3 is phonolite from a dike (photo of outcrop)
nj4 and nj5 are nepheline syenite (photo of outcrop)
nj6 is a breccia from a nearby diatreme

nj4

"

nepheline syenite

nj5

"

nepheline syenite

nj6

"

polymictic breccia in aphanitic matrix
(another view)

gq1

1-13-2013

quartz monzonite

The Ordovician Guilford Quartz Monzonite, collected at the Old Guilford Quarry (inactive and flooded), along Guilford Road, Columbia, Maryland.
Photo of the quarry, facing north

gq2

"

"

pr3

3-9-2013

feldspar with quartz

Several rocks collected from the vicinity of a large boulder of pegmatite in the Hilton area of Patapsco Valley State Park, Maryland.
Photo of the boulder
GPS 39.247335, 76.747203

pr4

"

pegmatite with cluster of "books" of mica

pr5

"

graphic granite
(another view, another view)
hi-res desktop background

pr6

"

quartz and possibly something else

pr7

"

smokey quartz

ecg1

5-18-2013

granodorite

Ellicott City Granodorite, from old quarry on Baltimore County side of Patapsco River

osc1

7-5-2014

fragment of calcareous concretion with cone structures
(another angle)

Devonian Ohio Shale along Ashtabula River, Ohio

wct1

11-15-2014

pegmatitic amphibolite

from Wincopin Trails area of Savage Park, Howard County, Maryland