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Ronnie Van Dommelen's Photo Gallery

Y19-DQTGypsum CaSO4·2H2O

08764110015857923992099.jpg
East Kemptville Tin-Indium Project, East Kemptville, Argyle, Yarmouth Co., Nova Scotia, Canada

Field of View: 5 mm

Sprays of gypsum crystals.

To my knowledge this is the only gypsum specimen from the mine.
Copyright: © R. Van Dommelen      Photo ID: 1040535     Uploaded by: Ronnie Van Dommelen   View Count: 10   Approval status: Public galleries    Type: Photo - 1118 x 839 pixels (0.9 Mpix)

7N7-QG5Siderite FeCO3 , Quartz SiO2

02270360015857920724149.jpg
East Kemptville Tin-Indium Project, East Kemptville, Argyle, Yarmouth Co., Nova Scotia, Canada

Field of View: 6.5 mm

Elongated, hourglass shaped siderite crystals on quartz. The endfaces are triangles rotated 180 degrees, with all edges rounded. Siderite was very common at the mine and was found in a variety of forms.
Copyright: © R. Van Dommelen      Photo ID: 1040534     Uploaded by: Ronnie Van Dommelen   View Count: 32   Approval status: Public galleries    Type: Photo - 4183 x 2791 pixels (11.7 Mpix)

HA6-35XSiderite FeCO3 , Quartz SiO2

01930050015857920738787.jpg
East Kemptville Tin-Indium Project, East Kemptville, Argyle, Yarmouth Co., Nova Scotia, Canada

Field of View: 5.5 mm

Very thin, delicate, disc shaped siderite crystals. Siderite was common at the mine and was found in a variety of forms/habits.
Copyright: © R. Van Dommelen      Photo ID: 1040533     Uploaded by: Ronnie Van Dommelen   View Count: 18   Approval status: Public galleries    Type: Photo - 1794 x 1345 pixels (2.4 Mpix)

JJG-UV2Triplite Mn2+2(PO4)F , Sphalerite ZnS , Quartz SiO2

Multiple photos available
06288660015857915636975.jpg
East Kemptville Tin-Indium Project, East Kemptville, Argyle, Yarmouth Co., Nova Scotia, Canada

Field of View: 12 mm

Brownish red triplite, with black sphalerite and grayish quartz.

Material from this mine was the first find of triplite in Canada. Mandarino et al. report that the triplite normally occurs is associated with pyrite and sphalerite in quartz. This specimen appears to contain a couple crystals. The triplite shows either faces or restricted growth from sphalerite crystal faces. However since the sphalerite fills in the middle of the pod (i.e. formed later) it appears that the faces are triplite crystals.

A series is formed between triplite and zwieselite with end member triplite containing all Mn and zwieselite containing one part Mn and one part Fe. Mandarino et al. performed a microprobe analysis of the East Kemptville material and found 1.43 parts Mn and 0.43 parts Fe (with the remainder being Mg).

Mandarino, J.A., Richardson, J.M.G., Dunn, P.J., and Spooner, E.T.C. (1984) Triplite from East Kemptville, Nova Scotia. Mineralogical Magazine: 48: 142-143.
Copyright: © R. Van Dommelen      Photo ID: 1040532     Uploaded by: Ronnie Van Dommelen   View Count: 13   Approval status: Public galleries    Type: Photo - 4075 x 3056 pixels (12.5 Mpix)

JYQ-MYTHisingerite Fe3+2(Si2O5)(OH)4·2H2O

02568520015856995804332.jpg
East Kemptville Tin-Indium Project, East Kemptville, Argyle, Yarmouth Co., Nova Scotia, Canada

Field of View: 5 mm

Red, botryoidal hisingerite with a resinous luster and conchoidal fracture (not visible in photo). WDS testing indicated Si and Fe, with a bit of Al as an impurity. The material from this mine is usually black or very dark, this specimen has unusually bright color.
Copyright: © R. Van Dommelen      Photo ID: 1040231     Uploaded by: Ronnie Van Dommelen   View Count: 12   Approval status: Public galleries    Type: Photo - 1104 x 826 pixels (0.9 Mpix)

NPQ-1JXMalachite Cu2(CO3)(OH)2 , Hematite Fe2O3 , Baryte BaSO4

05291970015856159314146.jpg
Walton barite mine, Walton, Hants Co., Nova Scotia, Canada

Field of View: 3 mm

Tiny tufts of malachite on an aggregate of black hematite plates, surrounded by white baryte.
Copyright: © R. Van Dommelen      Photo ID: 1039906     Uploaded by: Ronnie Van Dommelen   View Count: 6   Approval status: Public galleries    Type: Photo - 1415 x 1061 pixels (1.5 Mpix)

80L-Q02Galena PbS , Siderite FeCO3

09884150015856120237037.jpg
Walton barite mine, Walton, Hants Co., Nova Scotia, Canada

Largest Crystal Size: 1.5 mm

Galena, in a small pocket surrounded by siderite. The galena is mostly octahedral in form, with only small cube faces. The rest of the specimen is massive granular galena.
Copyright: © R. Van Dommelen      Photo ID: 1039902     Uploaded by: Ronnie Van Dommelen   View Count: 12   Approval status: Public galleries    Type: Photo - 1073 x 797 pixels (0.9 Mpix)

MTG-H6HProustite Ag3AsS3

06159880015854258236697.jpg
Walton barite mine, Walton, Hants Co., Nova Scotia, Canada

Field of View: 10 cm

Massive red proustite. A rich specimen of good size. This is a rare example from the mine - not many were saved.

The open pit at Walton was worked for about 20 years for barite (1941-1961). In 1956 a lead-zinc-silver-copper deposit was discovered underneath the barite and it was mined in later years (1961-1970) until the underground working flooded.

Nova Scotia Museum of Natural History specimen 984GM160.001.
Copyright: © R. Van Dommelen      Photo ID: 1039408     Uploaded by: Ronnie Van Dommelen   View Count: 12   Approval status: Public galleries    Type: Photo - 1720 x 1081 pixels (1.9 Mpix)

M4W-721Epistilbite CaAl2Si6O16·5H2O , Mordenite (Na2,Ca,K2)4(Al8Si40)O96·28H2O , Smectite Group A0.3D2-3[T4O10]Z2·nH2O

Multiple photos available
08295860015854008772923.jpg
Ross Creek, Kings Co., Nova Scotia, Canada

Field of View: 3 cm

This specimen is figured in Pe-Piper, G. (2000) Mode of occurrence, chemical variation and genesis of mordenite and other associated zeolites from Morden, Nova Scotia. The Canadian Mineralogist: 38: 1215-1232 (figure 3A).

It is the cut face of a zoned amygdale (Pe-Piper number Z650), showing an outer zone of mordenite and an inner zone of epistilbite, separated by a dark zone with Fe–Mg–Na aluminosilicates and mordenite.

In the paper, the X-ray results are presented in Figure 6B, however it appears that 'Zone 3 mordenite' should read 'Zone 3 epistilbite'. The data are a good match to epistilbite.

Thanks to Georgia Pe-Piper for allowing me to re-photograph the specimen.
Copyright: © R. Van Dommelen      Photo ID: 1039273     Uploaded by: Ronnie Van Dommelen   View Count: 18   Approval status: Public galleries    Type: Photo - 3642 x 2731 pixels (9.9 Mpix)

WRU-JQTAllanite-(Ce) {CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)

01414710015853994441834.jpg
Barrington Passage, Shelburne Co., Nova Scotia, Canada

Field of View: 20 cm

Elongated rusty allanite-(Ce) crystals embedded in granite.

Nova Scotia Museum of Natural History specimen 967GM0202.036.
Copyright: © R. Van Dommelen      Photo ID: 1039272     Uploaded by: Ronnie Van Dommelen   View Count: 14   Approval status: Public galleries    Type: Photo - 4031 x 3023 pixels (12.2 Mpix)
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