Little Patuxent rock bank, Howard County, Maryland, USA

Dimensions: 4.5 cm x 3.5 cm

Collected in stream gravel along the Little Patuxent River about 2 miles northeast of Simpsonville. Possible rose quartz?

Photo ID: 1364250 Uploaded by: Jim Wilkinson Upload date: 2024-04-04 View Count: 16 Status: Public galleries Type: Photo - 2064×1776 (3.7 Mpix)

729-1QF Apatite Ca₅(PO₄)₃(Cl/F/OH) , Muscovite KAl₂(AlSi₃O₁₀)(OH)₂ , Quartz SiO₂

Scaggsville, Howard County, Maryland, USA

Dimensions: 2.5 cm x 2.0 cm
Largest Crystal Size: 2 mm

small translucent blue crystal is probably apatite and photos were reviewed by the chair of physical sciences at Howard Community College ---added a child photo to show full size of specimen

Photo ID: 1137595 Uploaded by: Jim Wilkinson Upload date: 2021-04-18 View Count: 96 Status: Public galleries Type: Photo - 2102×2012 (4.2 Mpix)

WKM-82A Quartz SiO₂ , Schorl NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH) , Beryl Be₃Al₂(Si₆O₁₈)

Cecil County, Maryland, USA

Dimensions: 12 cm x 7 cm
Largest Crystal Size: 2 cm

green crystal appears to be beryl based on hardness tests and association with quartz although beryl is not listed for Cecil County

Photo ID: 1136994 Uploaded by: Jim Wilkinson Upload date: 2021-04-15 View Count: 76 Status: Public galleries Type: Photo - 2622×3496 (9.2 Mpix)

HYG-QWN Microcline K(AlSi₃O₈) , Muscovite KAl₂(AlSi₃O₁₀)(OH)₂ , Quartz SiO₂ , Almandine Fe²⁺₃Al₂(SiO₄)₃

Stony Run, Baltimore City, Maryland, USA

Dimensions: 3 cm x 2 cm

Photo ID: 1132272 Uploaded by: Jim Wilkinson Upload date: 2021-03-23 View Count: 84 Status: Public galleries Type: Photo - 2675×1978 (5.3 Mpix)

ULR-Q1G Feldspar Group, Muscovite KAl₂(AlSi₃O₁₀)(OH)₂ , Garnet Group X₃Z₂(SiO₄)₃ , Fluorapatite Ca₅(PO₄)₃F

Smedley Park beryl locality, Springfield Township, Delaware County, Pennsylvania, USA

Dimensions: 2.5 cm x 2.0 cm

image using flash

Photo ID: 1129407 Uploaded by: Jim Wilkinson Upload date: 2021-03-10 View Count: 105 Status: Public galleries Type: Photo - 1847×2462 (4.5 Mpix)

X9E-EEW Quartz (Var: Chalcedony) SiO₂

Unionville, Newlin Township, Chester County, Pennsylvania, USA

Dimensions: 3 cm x 3 cm

in stream gravels

Photo ID: 1127789 Uploaded by: Jim Wilkinson Upload date: 2021-03-03 View Count: 101 Status: Public galleries Type: Photo - 1789×1342 (2.4 Mpix)

WH6-CHP Quartz SiO₂ , Feldspar Group

Little Patuxent rock bank, Howard County, Maryland, USA

Dimensions: 3 cm x 2 cm

Photo ID: 1127544 Uploaded by: Jim Wilkinson Upload date: 2021-03-02 View Count: 45 Status: User gallery only Type: Photo - 2630×2488 (6.5 Mpix)

02M-3XX Quartz SiO₂

Simpsonville, Howard County, Maryland, USA

Dimensions: 4 cm x 4 cm

metallic mineral in photo leaves a brown streak and is scratched by quartz (hardness 7)---hematite is 5-6 hardness

Photo ID: 1120362 Uploaded by: Jim Wilkinson Upload date: 2021-01-27 View Count: 98 Status: User gallery only Type: Photo - 2748×1832 (5.0 Mpix)

PHH-CFP Antigorite Mg₃(Si₂O₅)(OH)₄

Delight Quarry, Soldiers' Delight ridge, Delight, Baltimore County, Maryland, USA

Dimensions: 4 cm x 3 cm

Parallel fibrous antigorite.

Photo ID: 1118675 Uploaded by: Jim Wilkinson Upload date: 2021-01-20 View Count: 157 Status: Public galleries Type: Photo - 2680×1787 (4.8 Mpix)

K4D-VEW Albite Na(AlSi₃O₈) , Garnet Group X₃Z₂(SiO₄)₃ , Quartz SiO₂

Marriottsville flagstone Quarries, Baltimore County, Maryland, USA

Dimensions: 10.5 cm x 5.0 cm

Photo ID: 1115663 Uploaded by: Jim Wilkinson Upload date: 2021-01-07 View Count: 60 Status: User gallery only Type: Photo - 3870×2580 (10.0 Mpix)

Page 1 of 13 (1 to 10 of 124 total)

Next Page

1 2 3 4 5 6 7 8 9 10 11 12 13

Go to top of page

Jim Wilkinson's Photo Gallery

9QL-D62Quartz SiO2

729-1QFApatite Ca5(PO4)3(Cl/F/OH) , Muscovite KAl2(AlSi3O10)(OH)2 , Quartz SiO2

WKM-82AQuartz SiO2 , Schorl NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) , Beryl Be3Al2(Si6O18)

HYG-QWNMicrocline K(AlSi3O8) , Muscovite KAl2(AlSi3O10)(OH)2 , Quartz SiO2 , Almandine Fe2+3Al2(SiO4)3

ULR-Q1GFeldspar Group, Muscovite KAl2(AlSi3O10)(OH)2 , Garnet Group X3Z2(SiO4)3 , Fluorapatite Ca5(PO4)3F

X9E-EEWQuartz (Var: Chalcedony) SiO2

WH6-CHPQuartz SiO2 , Feldspar Group

02M-3XXQuartz SiO2

PHH-CFPAntigorite Mg3(Si2O5)(OH)4

K4D-VEWAlbite Na(AlSi3O8) , Garnet Group X3Z2(SiO4)3 , Quartz SiO2

9QL-D62 Quartz SiO₂