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Joaquin Montoro
Joined: 25 Nov 2010
Posts: 225
Location: Murcia (Spain)
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 Posted: Dec 07, 2013 14:06 Post subject: Re: Collection of Michael Shaw |
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That beryl from Renfrew Co. looks like an apatite, common in the area.
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2246
Location: Oklahoma
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| Posted: Dec 07, 2013 16:17 Post subject: Re: Collection of Michael Shaw |
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Thanks Don. Yes, the herkimers are in a very hard dolostone. It takes a lot of work with a heavy sledge. I would have liked to trim that specimen some more, but didn't want to risk the quartz breaking or popping out of the vug.
Joaquin, fluorapatite does occur at the Beryl Pit, but it is not common. The crystal I posted is very typical of the location, embedded in pink feldspar. Check out the Mindat site for this location - https://www.mindat.org/loc-6641.html. Of course beryl is much harder than the fluorapatite, and the latter is often difficult to collect because the crystals are so brittle and fracture easily. In my next post I'll show some apatites from the area.
Michael
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2246
Location: Oklahoma
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| Posted: Dec 09, 2013 10:52 Post subject: Re: Collection of Michael Shaw |
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More self collected minerals from the 1960s.
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Fluorapatite
Fission Mine, Cardiff Township, Halliburton Co., Ontario, Canada
6.7 x 8.4 cm
A crystal of brown fluorapatite embedded in colorless calcite with purple fluorite. |
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41006 Time(s) |
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| Description: |
Autunite
Ruggles Mine, Grafton, Grafton Co., New Hampshire, USA
5.1 x 7.5 cm
Bright yellow crusts and lustrous platy micro-crystals of autunite on brownish feldspar with minor black uraninite. |
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41030 Time(s) |
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| Description: |
Gummite
Ruggles Mine, Grafton, Grafton Co., New Hampshire, USA
4.0 x 4.3 cm |
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| Viewed: |
41023 Time(s) |
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Uraninite
Ruggles Mine, Grafton, Grafton Co., New Hampshire, USA
5.0 x 7.5 cm
Black uraninite and minor yellow autunite on a light-colored feldspar matrix. |
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41124 Time(s) |
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Uraninite
Ruggles Mine, Grafton, Grafton Co., New Hampshire, USA
5.0 x 7.5 cm
Same specimen as above under SW UV light. |
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| Viewed: |
41129 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2246
Location: Oklahoma
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| Posted: Dec 11, 2013 09:52 Post subject: Re: Collection of Michael Shaw |
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More self collected minerals.
| Description: |
Wulfenite
Manhan Lead Mine, Loudville, Hampshire Co., Massachusetts, USA
5.0 x 5.5 cm
Tabular orange wulfenite crystals to 3 mm on quartz matrix. |
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40948 Time(s) |
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Heterosite
Black Mt. Quarry, Rumford, Oxford Co., Maine, USA
2.0 and 2.3 cm |
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40896 Time(s) |
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| Description: |
Siderite
Roxbury iron Mine, Roxbury, Litchfield Co., Connecticut, USA
9.0 x 11.0 cm
Chocolate-brown, crystalline siderite with a slightly irridescent surface and minor quartz. |
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40988 Time(s) |
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Muscovite
Branchville Quarry, Branchville, Fairfield Co., Connecticut, USA
5.0 x 7.1 cm
Lamellar, rounded muscovite in a quartz and albite matrix. This form of muscovite is sometimes known as "ball peen mica" for obvious reasons. |
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40923 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2246
Location: Oklahoma
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| Posted: Dec 14, 2013 12:41 Post subject: Re: Collection of Michael Shaw |
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The last post of self collected minerals before moving on to other parts of the world.
| Description: |
Gahnite
Mt. Peak Mine, Charlemont, Franklin Co., Massachusetts
5.5 x 6.1 cm
Black octahedral crystals to 5 mm on edge embedded in an iron-rich matrix. |
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| Viewed: |
40827 Time(s) |
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Lepidolite
Mt. Mica, Paris, Oxford Co., Maine
4.0 x 5.3 cm
Micaceous lilac-colored lepidolite embedded in white albite var.
cleavelandite. |
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40803 Time(s) |
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Calcite
Rt. 13 roadcut, Chittenango Falls, Madison Co., New York
4.5 x 5.2 cm
Scalenohedral calcite crystals to 1.5 cm on limestone matrix with bladed pale blue celestite. |
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40817 Time(s) |
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Tremolite
New England Lime Quarry, Canaan, Litchfield Co., Connecticut
8.8 x 11.2 cm
Acicular white tremolite with pyrite in granular orange dolomitic marble. |
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40843 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2246
Location: Oklahoma
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| Posted: Dec 16, 2013 10:54 Post subject: Re: Collection of Michael Shaw |
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The next few posts will feature minerals from South Africa. You should feel right at home Pierre. I'll start out with a few thumbnail specimens.
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Sturmanite
N'Chwaning II Mine, Kuruman, N. Cape Prov., South Africa
2.1 x 2.2 cm |
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40720 Time(s) |
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Pyrite
N'Chwaning Mine, Kuruman, N. Cape Prov., South Africa
2.3 x 3.0 cm |
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40674 Time(s) |
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| Description: |
Hematite
N'Chwaning II Mine, Kuruman, N. Cape Prov., South Africa
1.8 x 1.9 cm |
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40744 Time(s) |
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| Description: |
Rhodochrosite
N'Chwaning I Mine, Kuruman, N. Cape Prov., South Africa
1.1 x 1.6 cm |
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40745 Time(s) |
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Fluorite
Riemvasmaak, Kakamas District, N. Cape Prov., South Africa
2.1 x 2.7 cm |
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40705 Time(s) |
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Roger Warin
Joined: 23 Jan 2013
Posts: 1233
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| Posted: Dec 16, 2013 11:02 Post subject: Re: Collection of Michael Shaw |
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Nice minerals from RSA.
Thanks for sharing.
Roger.
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Don Lum
Joined: 03 Sep 2012
Posts: 2919
Location: Arkansas
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| Posted: Dec 16, 2013 11:28 Post subject: Re: Collection of Michael Shaw |
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Michael, I really like your Rhodochrosite from the N'Chwaning I Mine. Just beautiful.
Merry Christmas.
Don
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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| Posted: Dec 16, 2013 15:23 Post subject: Re: Collection of Michael Shaw |
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Hi Michael. I agree with Don; lovely little rhodo. I do have a few mineral friends who are big in KMF mineral specimens. I still have to catch on. I am looking forward to seeing the rest of your RSA specimens. Regards.
_________________
Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2246
Location: Oklahoma
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| Posted: Dec 18, 2013 09:37 Post subject: Re: Collection of Michael Shaw |
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Thanks Roger, Don, and Pierre. I think the KMF has produced some of the most spectacular rhodochrosites of anywhere in world, and with a greater variety of crystal habits. The wheat-sheaf habit with the pale pink central zone seems to be the least common of these.
| Description: |
Calcite
N'Chwaning II Mine, Kuruman, N. Cape Prov., South Africa
3.5 x 7.2 cm
Scalenohedral calcite crystals with a reddish-brown hue imparted by hematite. |
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| Viewed: |
40461 Time(s) |
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| Description: |
Hydroxyapophyllite
N'Chwaning II Mine, Kuruman, N. Cape Prov., South Africa
3.5 x 4.4 cm
Pseudocubic hydroxyapophyllite crystals with lightly striated faces and truncated corners. |
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| Viewed: |
40446 Time(s) |
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| Description: |
Calcite
N'Chwaning II Mine, Kuruman, N. Cape Prov., South Africa
6.5 x 9.0 cm
Cone-shaped groups of pinkish-tan calcite. Exhibits intense red fluorescence under SW UV light. |
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40457 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2246
Location: Oklahoma
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| Posted: Dec 20, 2013 12:16 Post subject: Re: Collection of Michael Shaw |
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More from N'Chwaning Mines.
| Description: |
Gaudefroyite
N'Chwaning II Mine, Kuruman, N. Cape Prov., South Africa
7.1 x 10.5 cm
Lustrous black crystals of gaudefroyite covering a druse of dark red andradite crystals. |
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| Viewed: |
40226 Time(s) |
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| Description: |
Gaudefroyite
N'Chwaning II Mine, Kuruman, N. Cape Prov., South Africa
7.1 x 10.5 cm
Closer view of above specimen. |
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| Viewed: |
40238 Time(s) |
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| Description: |
Andradite
N'Chwaning II Mine, Kuruman, N. Cape Prov., South Africa
4.2 x 5.6 cm
A flat plate of dark red andradite crystals to 0.8 cm covering a mixture of massive andradite with embedded metallic black hematite crystals to 2 mm. |
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| Viewed: |
40238 Time(s) |
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| Description: |
Inesite
N'Chwaning II Mine, Kuruman, N. Cape Prov., South Africa
7.0 x 9.5 cm
Acicular salmon-colored inesite crystals on a vuggy brown matrix with a few colorless micro-crystals of apophyllite on the bottom of the specimen. |
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| Viewed: |
40247 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2246
Location: Oklahoma
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| Posted: Dec 23, 2013 08:42 Post subject: Re: Collection of Michael Shaw |
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More from the N'Chwaning Mine.
| Description: |
Hausmannite
N'Chwaning Mine, Kuruman, N. Cape Prov., South Africa
2.6 x 3.7 cm
An intergrown group of lustrous black hausmannite crystals to 2 cm on edge. |
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| Viewed: |
40019 Time(s) |
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| Description: |
Olmiite
N'Chwaning II Mine, Kuruman, N. Cape Prov., South Africa
4.0 x 6.0 cm
Drusy, colorless calcite with a 1.9 cm group of lustrous, peach-colored olmiite and small white spherical masses of oyelite. |
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| Viewed: |
40027 Time(s) |
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| Description: |
Bultfonteinite
N'Chwaning II Mine, Kuruman, N. Cape Prov., South Africa
5.5 x 10.0 cm, FOV=5.0 cm
Multiple bowtie groups of white, acicular bulfonteinite crystals with blocky, beige-colored olmiite crystals on dark matrix. |
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| Viewed: |
40005 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2246
Location: Oklahoma
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| Posted: Dec 27, 2013 11:00 Post subject: Re: Collection of Michael Shaw |
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The last of our specimens from the Kalihari Manganese Field.
| Description: |
Hematite
N'Chwaning II Mine, Kuruman, N. Cape Province, South Africa
3.9 x 4.0 cm
Lustrous metallic black hematite crystals with a small colorless calcite rhomb. |
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| Viewed: |
39920 Time(s) |
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| Description: |
Hematite
N'Chwaning II Mine, Kuruman, N. Cape Province, South Africa
3.9 x 4.0 cm |
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| Viewed: |
39923 Time(s) |
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| Description: |
Kutnohorite
N'Chwaning II Mine, Kuruman, N. Cape Province, South Africa
4.0 x 6.0 cm
Pale pink mushroom-shaped aggregate of fibrous kutnohorite crystals. |
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| Viewed: |
40004 Time(s) |
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| Description: |
Calcite
Wessels Mine, Hotazel, N. Cape Province, South Africa
8.2 x 9.0 cm
Fan-shaped groups of pink calcite that exhibit intense red fluorescece under SW UV light. |
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| Viewed: |
39913 Time(s) |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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| Posted: Dec 27, 2013 13:45 Post subject: Re: Collection of Michael Shaw |
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| 1755 Kutnohorite.jpg is a very cool specimen. Thanks for sharing!
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2246
Location: Oklahoma
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| Posted: Dec 30, 2013 10:01 Post subject: Re: Collection of Michael Shaw |
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| GneissWare wrote: | | 1755 Kutnohorite.jpg is a very cool specimen. Thanks for sharing! |
Thanks Bob, glad you enjoyed the kutnohorite. It is one of my favorite N'Chwaning pieces.
Now for a few odds and ends from other locations throughout South Africa.
| Description: |
Corundum
Zoutpansburg, Gauteng Province, South Africa
3.2 x 6.5 cm
A doubly-terminated hexagonal gray corundum crystal with pinacoid terminations. |
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| Viewed: |
39717 Time(s) |
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| Description: |
Quartz var. amethyst
Boekenhoutshoek, Mkobola Dist., Mpummalanga Prov., South Africa
5.5 x 6.5 cm
A small group of lilac-colored amethyst crystals with prism faces overgrown by small amethyst crystals, locally known as “cactus quartz” |
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| Viewed: |
39763 Time(s) |
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Quartz with papagoite inclusions
Messina Mine, Limpopo Prov., South Africa
3.0 x 6.8 cm
Turquoise blue papagoite inclusions in quartz associated with drusy green epidote. |
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| Viewed: |
39728 Time(s) |
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| Description: |
Quartz
Messina Mine, Limpopo Prov., South Africa
6.0 x 7.3 cm
Doubly-terminated quartz crystals colored reddish-brown by hematite inclusions with small black hematite crystals coating several prism faces. |
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| Viewed: |
39739 Time(s) |
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| Description: |
Siderite ps. calcite
Broken Hill Mine, Aggeneys, N. Cape Prov., South Africa
4.3 x 5.1 cm
A barrel-shaped, hollow, brown prism of siderite/sphalerite pseudomorphing calcite. |
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| Viewed: |
39756 Time(s) |
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