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R. Peter Richards' Photo Gallery

K2T-LXFVesuvianite (Var: Manganoan Vesuvianite) (Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10

03679560015114639123882.jpg
Parker Shaft, Franklin Mine, Franklin, Franklin Mining District, Sussex County, New Jersey, USA

Field of View: 1.1 mm

Identified from EDS spectrum, confirmed by Van King.
Imaged at 88x using a Nikon SMZ1500 microscope, composite of 19 images stacked using Helicon Focus.
Copyright: © R. Peter Richards      Photo ID: 857482     Uploaded by: R. Peter Richards   View Count: 84   Approval status: Public galleries    Type: Photo - 1090 x 960 pixels (1.0 Mpix)

3Y2-FM2Metavariscite AlPO4·2H2O

08986330014946603013518.jpg
Lucin Mining District, Pilot Range, Box Elder Co., Utah, USA

Field of View: 0.95 mm

Contact twin on (102) and untwinned crystal.
Copyright: © R. Peter Richards      Photo ID: 800562     Uploaded by: R. Peter Richards   View Count: 67   Approval status: Public galleries    Type: Photo - 856 x 714 pixels (0.6 Mpix)

4KC-LV8Stibiotantalite Sb(Ta,Nb)O4 , Elbaite Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)

04338700014961893248800.jpg
Fisher Quarry, Topsham, Sagadahoc Co., Maine, USA

Field of View: 3.8 mm

Personally collected from pocket tailings, with permission
Copyright: © R. Peter Richards      Photo ID: 649036     Uploaded by: R. Peter Richards   View Count: 180   Approval status: Public galleries    Type: Photo - 1280 x 960 pixels (1.2 Mpix)

NV8-A8TStibiotantalite Sb(Ta,Nb)O4 , Elbaite Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)

00799760014962805326464.jpg
Fisher Quarry, Topsham, Sagadahoc Co., Maine, USA

Field of View: 5.7 mm

Specimen personally collected from pocket tailings, with permission.
Copyright: © R. Peter Richards      Photo ID: 649033     Uploaded by: R. Peter Richards   View Count: 161   Approval status: Public galleries    Type: Photo - 1280 x 960 pixels (1.2 Mpix)

AE6-YXFHydroxyapophyllite-(K) KCa4(Si8O20)(OH,F)·8H2O

08252610014946603021015.jpg
Bull Run Quarry, Conklin, Loudoun Co., Virginia, USA

Field of View: 3.12 mm

The most elegant aspect of these crystals is their elongated prismatic habit, with multiple (ideally 24, if my crystallography is correct) faces around the prism zone.

SHAPE drawings are probably accurate but are not based on goniometric measurements of the prism/diprism face angles.
Copyright: © R. Peter Richards      Photo ID: 646367     Uploaded by: R. Peter Richards   View Count: 140   Approval status: Public galleries    Type: Photo - 723 x 1085 pixels (0.8 Mpix)

EH9-ANPParnauite Cu9(AsO4)2(SO4)(OH)10·7H2O

01334480014946603034176.jpg
Majuba Hill Mine, Antelope Mining District, Pershing Co., Nevada, USA

Field of View: 0.67 mm

Single crystal of green parnauite, just beginning to fan out. Taken at 112.5x.
Copyright: © R. Peter Richards      Photo ID: 585022     Uploaded by: R. Peter Richards   View Count: 171   Approval status: Public galleries    Type: Photo - 850 x 940 pixels (0.8 Mpix)

YT6-138Parnauite Cu9(AsO4)2(SO4)(OH)10·7H2O

02676370014962805325781.jpg
Majuba Hill Mine, Antelope Mining District, Pershing Co., Nevada, USA

Field of View: 1.42 mm

Group of green fan-shaped crystal aggregates.
Copyright: © R. Peter Richards      Photo ID: 585020     Uploaded by: R. Peter Richards   View Count: 119   Approval status: Public galleries    Type: Photo - 1280 x 960 pixels (1.2 Mpix)

8F4-CTLParnauite Cu9(AsO4)2(SO4)(OH)10·7H2O

07980900014946603035095.jpg
Majuba Hill Mine, Antelope Mining District, Pershing Co., Nevada, USA

Field of View: 1.31 mm

Green fan(s) of bladed parnauite crystals. Identified by label, locality, comparison with other images.
Copyright: © R. Peter Richards      Photo ID: 585019     Uploaded by: R. Peter Richards   View Count: 126   Approval status: Public galleries    Type: Photo - 1030 x 810 pixels (0.8 Mpix)

TQ1-275Parnauite Cu9(AsO4)2(SO4)(OH)10·7H2O

00600190014946603049364.jpg
Majuba Hill Mine, Antelope Mining District, Pershing Co., Nevada, USA

Field of View: 1.45 mm

Nest of green fan-shaped crystal groups, identified by comparison to known specimens and on the basis of the locality and the label for the specimen.
Copyright: © R. Peter Richards      Photo ID: 585016     Uploaded by: R. Peter Richards   View Count: 147   Approval status: Public galleries    Type: Photo - 980 x 840 pixels (0.8 Mpix)

86L-PP0Brookite TiO2

09134180014946352625702.jpg
Anatase locality, Lot mine, Cebolla Mining District, Gunnison Co., Colorado, USA

Brookite crystal about 1 mm tall.
Photo ID: 352422     Uploaded by: R. Peter Richards   View Count: 305   Approval status: Public galleries    Type: Photo - 442 x 555 pixels (0.2 Mpix)
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