John R. Montgomery's Photo Gallery
27N-7MLFeldspar Group, Melonite NiTe2 , Altaite PbTe , Uraninite UO2 , Gold Au
K showing, Lac Mistamisk, Nunavik, Nord-du-Québec, Québec, CanadaDimensions: 7 cm x 6 cm x 3 cm
This specimen is a piece of coarse feldspar vein material probably containing the tellurides melonite and altaite. There is also black veinlet material that may be uraninite. The telluride species have been X-ray confirmed in other material from the occurrence. There may also be some native gold. See GSC Paper 85-1A (Report of Progress), page 146, and Kish, L. & Cuney, M., Mineralogical Magazine vol. 44, pp. 471-483. For more relevant references, refer to the text of the posting.
The specimen is from the K-showing on the Kish property, Mistamisk Lake, Québec. It was given to Giles Peatfield by Dr. J. Douglas Scott, who collected the material in late August or early September 1982 while on a helicopter reconnaissance for Eldorado Nuclear. There is a note on the back of the Peatfield collection label that says, quoting Scott, “10” wide pegm dyke x-cuts metasedts – just south of river just east of lake on top of small hill.”
Giles Peatfield, photo and collection.
G1J-0V2Fluorite CaF2
Erongo Region, NamibiaDimensions: 5.1 cm x 4.5 cm x 2.5 cm
Largest Crystal Size: 3.4 cm
A stack of twinned fluorite crystals to 3.4 cm. displaying the characteristic elongated form of twinning.
From a new find in this region. Some crystals have good transparency and interesting purple "bloches".
Purchased from Karp Minerals at the 2024 Tucson Show.
JR Montgomery Collection cat.#824
12R-G28Molybdenite MoS2
Meelpaeg Lake Molybdenum Prospect, Meelpaeg Lake, central Newfoundland, Newfoundland and Labrador, CanadaDimensions: 6.7 cm x 4.0 cm
This is a specimen of vein quartz with molybdenite along one face. It was collected by Giles Peatfield from the Meelpaeg Lake area, Newfoundland on 23 May, 1987 during a field examination with Mr. M. Dawson of Lucero Resource Corp. and Dr. J. Tuach of the Newfoundland Department of Mines and Energy as it was then known.
Giles Peatfield photo and collection.
V5W-AV6Scheelite Ca(WO4) , Quartz SiO2 , Mica Group, Albite Na(AlSi3O8)
Great Gull Scheelite prospects, Great Gull Lake, Newfoundland, Newfoundland and Labrador, CanadaDimensions: 65 mm x 65 mm x 100 mm
Largest Crystal Size: 13.0 mm
Schellite, a >13mm. pale cream crystal exposed in quartz in a quartz and coarse albite (crystal sections to 30mm.) pegmatite? with much fine muscovite and occasional large pale green fibrous amphilbole (?) as deeply weathered crystals. NOTE: a weathered surface-grab sample with slickensided muscovite on one face (video).
Ex D. J.(Jamie) Robertson, field geologist Falconbridge Ltd. 1983.
Doug Scott Collection.
XH2-6TJBavenite Ca4Be2Al2Si9O26(OH)2 , Roggianite Ca2Be(OH)2Al2Si4O13·2.5H2O , Beryl Be3Al2(Si6O18)
Great Gull Scheelite prospects, Great Gull Lake, Newfoundland, Newfoundland and Labrador, CanadaDimensions: 35 mm x 23 mm x 10 mm
Largest Crystal Size: 1.0 cm
Bavenite (XRD) as flat bladed pearly-white fracture-filling (?) crystal plates to 1cm. (ink arrow) with two small (3mm. dia) patches of roggianite (XRD) as radial white to cream fibrous crystals (overgrowing or replacing bavenite?), with a 7X7X10 mm. very pale green somewhat corroded beryl crystal-fragment in a quartz pegmatite.
South Quarry prospect, Great Gull Lake, Newfoundland #GG83-15B.
Ex D.J. (Jamie) Robinson, field geologist Falconbridge Ltd. 1983
Doug Scott Collection.
C79-2NRFluorite CaF2 , Quartz SiO2
Aouli, Mibladen, Aït Oufella Caïdat, Midelt Cercle, Midelt Province, Drâa-Tafilalet Region, MoroccoDimensions: 6.7 cm x 3.5 cm x 3.2 cm
Largest Crystal Size: 2.1 cm
A cluster of yellow translucent cubic fluorite crystals to 2.1cm. with matte lustre. I purchased this specimen at the 2024 Tucson Show because of the EPIMORPHS present (shown here).
There are 3 quartz epimorphs at one end of the specimen. The largest one appears to be quartz after calcite where the calcite has completely dissolved leaving a hollow cast surrounded by white quartz. One can observe the perfect fluorite crystals at the base of the now dissolved calcite crystal (see video). The two smaller epimorphs are quite thin casts and may be quartz after anhydrite. Strong fluorescence under LW UV light.
JR Montgomery Collection cat.#860
E74-T2DFluorite CaF2 , Quartz SiO2
Berta quarry and mine, Sant Cugat del Vallès-El Papiol, Vallès Occidental-Baix Llobregat, Barcelona, Catalonia, SpainDimensions: 6.3 cm x 4.0 cm x 4.0 cm
Largest Crystal Size: 8.0 mm
This specimen displays good separation of the octahedral crystals including single crystals to 8mm. (child photo) and small clusters (child photo).
It also displays characteristic green-blue colour for this locality and intense fluorescence. I have photographed it under long wave ultra violet light as seen here.
JR Montgomery Collection cat.#826
NV3-4R5Fluorite CaF2
Berta quarry and mine, Sant Cugat del Vallès-El Papiol, Vallès Occidental-Baix Llobregat, Barcelona, Catalonia, SpainDimensions: 9.5 cm x 6.9 cm x 2.5 cm
Largest Crystal Size: 7.0 mm
Druse of very sharp octahedral fluorite crystals to 7.0mm. displaying the distinctive green/pale blue colour that can be found at this locality as well as intense fluorescence. Mosaic patterning on the faces of larger crystals (child photo). I photographed this specimen under LW UV light (child photo).
Obtained at the 2024 Tucson Show from Alfredo Petrov at Jewel Tunnel.
Ex Rodolfo Pigrau Collection.
Ex Toady Collection (Rock Currier).
JR Montgomery Collection cat.#827
P3U-6X8Beryl Be3Al2(Si6O18) , Quartz SiO2
Great Gull Scheelite prospects, Great Gull Lake, Newfoundland, Newfoundland and Labrador, CanadaDimensions: 1.5 cm x 3.5 cm x 5.0 cm
This collection consists of three pieces. The largest, a single euhedral crystal of beryl measuring 1.5 x 3.5 x 5 cm, has attached a piece of grey quartz and some small flakes of white mica – see the left part of photo. There are two smaller fragments, including a single prism, divided lengthwise, measuring 1.5 x 2.5 x 3 cm, which is interesting as the centre portion of the crystal is colourless whereas the rim is a moderately green – see the right in the photo. In the centre is a smaller crystal group of roughly parallel prisms. The specimens are from the South Quarry area of the Great Gull tungsten property, immediately south of Berry Hill Pond, Newfoundland. They were collected by Giles Peatfield in July 1984. The geographic location is: 48°15’ N; 55°30’ W, on NTS map-sheets 02D/05 and 02D/06. The Newfoundland and Labrador mineral resources database lists reports 02D/0156 (Robertson), and 02D/0168 (Kohlsmith).
Giles Peatfield collection. Photograph by Giles Peatfield.
YQR-JM1Scheelite Ca(WO4)
Great Gull Scheelite prospects, Great Gull Lake, Newfoundland, Newfoundland and Labrador, CanadaField of View: 8 cm
These three scheelite crystals are from pegmatite veins at the South Quarry area of the Great Gull tungsten property, immediately south of Berry Hill Pond, Newfoundland. They were collected by Dr. W.B. (Bill) Coker of Kidd Creek Mines, and given to GRP in August 1983. The geographic location is: 48°15’ N; 55°30’ W, on NTS map-sheets 02D/05 and 02D/06. The Newfoundland and Labrador mineral resources database lists reports 02D/0156 (Robertson), and 02D/0168 (Kohlsmith).
Giles Peatfield collection. Photograph by Giles Peatfield.