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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2249
Location: Oklahoma
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 Posted: Sep 02, 2017 09:50 Post subject: Re: Collection of Michael Shaw |
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| Mineral: | Fluorite |
| Locality: | | Okorusu Mine, Otjiwarongo District, Otjozondjupa Region, Namibia |  |
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| Dimensions: | 5.6 x 7.6 cm |
| Description: |
| Intergrown groups of cubic green fluorite crystals to 1.5 cm. with purple cores. |
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| Viewed: |
21973 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2249
Location: Oklahoma
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| Posted: Sep 04, 2017 13:27 Post subject: Re: Collection of Michael Shaw |
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| Mineral: | Chalcopyrite on dolomite |
| Locality: | | Picher Field, Tri-State District, Ottawa County, Oklahoma, USA | |
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| Dimensions: | 3.5 x 6.1 cm |
| Description: |
| Sharp sphenoidal crystals of iridescent chalcopyrite and curved crystals of pink dolomite on a small bit of chert matrix. |
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21898 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2249
Location: Oklahoma
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| Posted: Sep 05, 2017 13:32 Post subject: Re: Collection of Michael Shaw |
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| Mineral: | Mottramite |
| Locality: | | Ojuela Mine, level 35, Mapimí, Municipio Mapimí, Durango, Mexico | |
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| Dimensions: | 4.4 x 6.0 cm |
| Description: |
| Velvety-textured olive green mottramite forming cauliflower-like aggregates. |
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| Viewed: |
21817 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2249
Location: Oklahoma
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| Posted: Sep 06, 2017 12:45 Post subject: Re: Collection of Michael Shaw |
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| Mineral: | Prehnite pseudomorph after Anhydrite |
| Locality: | | Lane Quarry, Westfield, Hampden County, Massachusetts, USA | |
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| Dimensions: | 3.3 x 5.1 cm |
| Description: |
| A stout stalactite of mint green prehnite pseudomorphing anhydrite. A rectangular hole is visible on the bottom of the specimen which once contained the anhydrite. |
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21785 Time(s) |
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vic rzonca
Joined: 18 Nov 2008
Posts: 820
Location: MA
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| Posted: Sep 06, 2017 14:33 Post subject: Re: Collection of Michael Shaw |
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| That prehnite is a beauty Mike, and a really nice image. So little comes out of that location. That may have been found in the past couple years, I managed to collect a few almost identical to yours. Nice to see a fine specimen, from my backyard, presented the way you have done so. Thanks.
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2249
Location: Oklahoma
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| Posted: Sep 06, 2017 14:53 Post subject: Re: Collection of Michael Shaw |
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| vic rzonca wrote: | | That prehnite is a beauty Mike, and a really nice image. So little comes out of that location. That may have been found in the past couple years, I managed to collect a few almost identical to yours. Nice to see a fine specimen, from my backyard, presented the way you have done so. Thanks. |
Thanks Vic. Having grown up in Massachusetts, I collected at many localities throughout the state, but I never managed to get in to the Lane Quarry while we lived there.
Michael
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Jamison Brizendine
Joined: 27 Feb 2014
Posts: 128
Location: Northeast Ohio
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| Posted: Sep 06, 2017 15:12 Post subject: Re: Collection of Michael Shaw |
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Speaking of the Lane Quarry, I found a reference to it in a Rock and Gem article by Bob Jones.
"The best-known Massachusetts quarry is the Lane Quarry in Westfield. Decades ago, it was accessible and produced wonderful datolites reaching three inches in diameter, some of the largest ever found in this country. The Lane Quarry is also well known for babingtonite, a black mineral that frequently occurs as microscopic to 1-inch crystals in some basalt quarries. It has lately been found in India associated with zeolites.
Unfortunately, Westfield has been off limits for decades. Controls there have been so tight that even when I asked the President of Lane Construction Company over for dinner one night, I was refused admission! (Jones, 2003, p. 76)"
Well got to give credit to Bob for trying, but it makes for a good story. I agree with Vic, this is an outstanding prehnite.
References Cited:
Jones, B., 2007, The Frugal Collector: The Zeolites, Part II: Natrolite, Mesolite, Scolecite and More, Rock and Gem, v. 37 (7), p. 72-74, 76-78.
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2249
Location: Oklahoma
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| Posted: Sep 06, 2017 16:09 Post subject: Re: Collection of Michael Shaw |
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| Jamison Brizendine wrote: | Speaking of the Lane Quarry, I found a reference to it in a Rock and Gem article by Bob Jones.
"The best-known Massachusetts quarry is the Lane Quarry in Westfield. Decades ago, it was accessible and produced wonderful datolites reaching three inches in diameter, some of the largest ever found in this country. The Lane Quarry is also well known for babingtonite, a black mineral that frequently occurs as microscopic to 1-inch crystals in some basalt quarries. It has lately been found in India associated with zeolites.
Unfortunately, Westfield has been off limits for decades. Controls there have been so tight that even when I asked the President of Lane Construction Company over for dinner one night, I was refused admission! (Jones, 2003, p. 76)"
Well got to give credit to Bob for trying, but it makes for a good story. I agree with Vic, this is an outstanding prehnite.
References Cited:
Jones, B., 2007, The Frugal Collector: The Zeolites, Part II: Natrolite, Mesolite, Scolecite and More, Rock and Gem, v. 37 (7), p. 72-74, 76-78. |
Thanks Jamison. I enjoyed reading about Bob Jones' experiences attempting to gain access. Babingtonites from this locality are well-known and I am lucky to have a nice one from there. The 3 inch datolites, however, have eluded me thus far :>)
Michael
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2249
Location: Oklahoma
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| Posted: Sep 20, 2017 13:47 Post subject: Re: Collection of Michael Shaw |
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| Mineral: | Topaz |
| Locality: | | Agnus Dei Claim, Cameron Cone, Crystal Park, El Paso County, Colorado, USA | |
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| Dimensions: | 2.7 x 3.3 cm |
| Description: |
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| Viewed: |
21876 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2249
Location: Oklahoma
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| Posted: Sep 21, 2017 15:27 Post subject: Re: Collection of Michael Shaw |
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| Mineral: | Andradite-Grossular series |
| Locality: | | Huanggang Mines, Hexigten Banner (Kèshíkèténg Qí), Chifeng (Ulanhad), Inner Mongolia Autonomous Region, China | |
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| Dimensions: | 3.5 x 5.1 cm |
| Description: |
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| Viewed: |
21727 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2249
Location: Oklahoma
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| Posted: Sep 23, 2017 12:23 Post subject: Re: Collection of Michael Shaw |
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Did I happen to mention that galena is my favorite mineral :>)
| Mineral: | Galena |
| Locality: | | Ojuela Mine, Mapimí, Municipio Mapimí, Durango, Mexico | |
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| Dimensions: | 3.5 x 3.5 cm |
| Description: |
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| Viewed: |
21649 Time(s) |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2249
Location: Oklahoma
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| Posted: Sep 24, 2017 17:54 Post subject: Re: Collection of Michael Shaw |
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| Mineral: | Scolecite |
| Locality: | | Chandanapuri, Samgamner, Ahmadnagar District, Maharashtra, India | |
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| Dimensions: | 3.6 x 4.7 cm |
| Description: |
| Bright orange radiating scolecite surrounded by botryoidal colorless chalcedony. |
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| Viewed: |
21568 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4248
Location: Germany
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| Posted: Sep 25, 2017 11:38 Post subject: Re: Collection of Michael Shaw |
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| crosstimber wrote: | | Did I happen to mention that galena is my favorite mineral :>) |
Yes, several times, but I don't mind ;-)
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2249
Location: Oklahoma
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| Posted: Sep 25, 2017 14:46 Post subject: Re: Collection of Michael Shaw |
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I knew you wouldn't mind Tobi ... I'll have a few new ones to post later in the week. However, just in case some people get tired of looking at heavy gray minerals, today's offering is fluorite.
| Mineral: | Fluorite |
| Locality: | | Tule Mine, Melchor Múzquiz, Municipio Melchor Múzquiz, Coahuila (Coahuila de Zaragoza), Mexico | |
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| Dimensions: | 4.3 x 6.5 x 8.4 cm. |
| Description: |
| Cubic fluorite with complex stepped growth and pale purple color zoning at the crystal edges. |
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| Viewed: |
21456 Time(s) |
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Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
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| Posted: Sep 26, 2017 09:32 Post subject: Re: Collection of Michael Shaw |
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Hi Michael. The chalcedony (Scolecite 0219.jpg); is it not possibly hyalite opal?
_________________
Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
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