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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Apr 15, 2011 10:53 Post subject: A mineralogical trip through the states of USA - Michigan |
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Michigan the "Great Lakes State"
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Copper Cliff mine, Phoenix, Keweenaw County, Michigan, USA 10.8 x 6 x 4 cm. Owned by A. E. Seaman Mineral Museum - Former John T. Reeder collection. Photo: A. E. Seaman Mineral Museum
To lead the Michigan State nothing better than one of the images downloaded by John Jaszczak in the great thread "A. E. Seaman Mineral Museum, Michigan T. University, Houghton, Michigan" ( http://www.mineral-forum.com/message-board/viewtopic.php?t=1416 )
Thank you John! |
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Joaquin Montoro
Joined: 25 Nov 2010
Posts: 225
Location: Murcia (Spain)
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Posted: Apr 15, 2011 14:22 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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An emblematic mineral from this state...
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Domeykite (Mohawkite).- Mohawk Mine, Keweenaw Co. Michigan (USA) 10x6x4 cm. 1042 grams of this rare copper arsenide. |
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44075 Time(s) |
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_________________ Damnati ad Metalla |
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John Jaszczak
Joined: 05 Oct 2010
Posts: 300
Location: Hancock, MI
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Posted: Apr 15, 2011 17:20 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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Here is a lovely copper with a small calcite crystal and micro datolite crystals from the Quincy Mine, Hancock, Michigan. The copper shows some dodecahedral crystals with edges modified by trapezohedral faces. It is 7.3 x 7 x 5 cm overall, and was originally in the John T. Reeder collection, now in the A. E. Seaman Mineral Museum collection.
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Copper, Calcite, Datolite. Quincy mine, Hancock, MI. |
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John Jaszczak
Joined: 05 Oct 2010
Posts: 300
Location: Hancock, MI
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Posted: Apr 16, 2011 10:35 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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These copper crystals have the morphology of laumontite and appear to be pseudomorphs. The crystals are approximately 1 cm tall. Franklin Mine, Hancock, Michigan. Ex John T. Reeder collection now in the A. E. Seaman Mineral Museum.
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Copper possible pseudomorph after laumontite. |
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rweaver
Joined: 13 Apr 2009
Posts: 259
Location: Ridgecrest, California
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Posted: Apr 16, 2011 18:10 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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Former collection of Al Ordway
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Analcime Bohemian Mine, Houghton, Michigan 5.0cm x 3.2cm |
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rweaver
Joined: 13 Apr 2009
Posts: 259
Location: Ridgecrest, California
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Posted: Apr 16, 2011 18:15 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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Former colelctions of Harvard and Marion Godshaw
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Manganite with Baryte Rose Negaunee, Michigan 5.6cm x 5.0cm |
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rweaver
Joined: 13 Apr 2009
Posts: 259
Location: Ridgecrest, California
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Posted: Apr 16, 2011 18:20 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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I have never seen any others from here, and neither had the well know dealer I got it from
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Sulfer after Celestite Scofield Quarry, Maybee, Michgan 4.0cm x 3.7cm |
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John Jaszczak
Joined: 05 Oct 2010
Posts: 300
Location: Hancock, MI
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Posted: Apr 16, 2011 18:32 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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Sulfurs from this quarry are really fine- probably not getting the attention they deserve. I personally collected small crystals there in the late 1980's. The A. E. Seaman Mineral Museum has a fine collection of sulfur and celestine from
this locality.
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John Jaszczak
Joined: 05 Oct 2010
Posts: 300
Location: Hancock, MI
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Posted: Apr 16, 2011 18:43 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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Finely crystallized copper associated with Baryte and calcite crystals from the White Pine Mine, Ontonagon Co., Michigan. Field of view is approximately 3 cm. John A. Jaszczak collection.
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Copper, Calcite and Baryte. White Pine Mine, Ontonagon Co., Michigan. |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Apr 16, 2011 19:36 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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Here are a few more Michigan pieces to add to the mix.
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Celestine and Calcite on Limestone
Newport Quarry Newport Monroe County, Michigan United States of America
16.5 x 11.0 cm overall |
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Silver and Copper
Adventure Mine Greenland Ontonagan County, Michigan United States of America
7.8 x 5.4 x 3.9 cm overall |
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Silver with Quartz
Copper Falls Mine Ashbed Lode Keweenaw County, Michigan United States of America
8.1 x 5.5 x 2.0 cm overall |
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Copper
Champion Mine Painesdale Houghton County, Michigan United States of America
13.6 x 4.5 x 3.1 cm overall |
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Calcite with Copper
Quincy Mine Pewabic Amygdaloid Lodes Houghton County, Michigan United States of America
12.1 x 9.8 x 6.5 cm overall |
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Celestine with Calcite
Maybee Michigan United States of America
6.4 x 5.5 x 3.5 cm overall |
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am mizunaka
Joined: 09 Apr 2010
Posts: 2052
Location: USA
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Posted: Apr 17, 2011 07:35 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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A few for Michigan.
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Celestine and Calcite Monroe County, Michigan Specimen size 10.5 x 9.5 cm. |
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Calcite included with Copper Calumet, Houghton Co., Michigan Specimen size 2 x 2.7 cm. |
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Calcite with Copper Keweenaw Peninsula, Michigan Specimen size 8.5 x 5.2 cm. |
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John S. White
Site Admin
Joined: 04 Sep 2006
Posts: 1295
Location: Stewartstown, Pennsylvania, USA
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Posted: Apr 17, 2011 10:05 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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Is this truly a pseudomorph (sulfur after celestine)? It sure doesn't look like one judging by the photograph. The morphology is perfectly correct for sulfur and it appears to be a single crystal, not what one sees in pseudomorphs.
Are there other known examples?
_________________ John S. White
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Antonio Alcaide
Site Admin
Joined: 23 Aug 2009
Posts: 314
Location: Spain
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Posted: Apr 19, 2011 07:20 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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John Jaszczak wrote: | Sulfurs from this quarry are really fine- probably not getting the attention they deserve. I personally collected small crystals there in the late 1980's. The A. E. Seaman Mineral Museum has a fine collection of sulfur and celestine from
this locality. |
Sure, I agree. Here you have one more from there
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Suphur with tiny calcite crystals. Maybee, Monroe Co., Michigan. 7,5 x 5 cm. Main crystal measuring 3 cm. |
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_________________ Life is the shortest crystal |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4112
Location: Germany
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Posted: Apr 19, 2011 09:24 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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Hi Antonio, a very nice sulphur specimen. I never heard of that quarry before, but these specimen nearly looks like from one of the famous mines on Sicily, really great!
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Antonio Alcaide
Site Admin
Joined: 23 Aug 2009
Posts: 314
Location: Spain
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Posted: Apr 19, 2011 10:36 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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Hi Tobias,
neither I knew that locality when I got the specimen. Little enchanting surprises of collecting minerals!!
In my case it is usually a bit easier to improve my collection after reading a lot here about minerals all over the world. But regarding this sulphur the specimen came first and then the Forum :-)
Cheers
_________________ Life is the shortest crystal |
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John S. White
Site Admin
Joined: 04 Sep 2006
Posts: 1295
Location: Stewartstown, Pennsylvania, USA
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Posted: Apr 19, 2011 13:17 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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Still hoping for a response from rweaver to my inquiry about the sulfur pseudomorph after celestine. Perhaps John Jaszczak might weigh in on this.
_________________ John S. White
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John Jaszczak
Joined: 05 Oct 2010
Posts: 300
Location: Hancock, MI
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Posted: Apr 19, 2011 13:25 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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When I posted my original reply about Michigan sulfurs, I didn't immediately note that the post mentioned pseudomorphs. It also looks like typical sulfur morphology to me; I'm not aware of any pseudomorphs after celestine in our collection (and find it a bit hard to imagine it happening in the deposit). I was waiting for George Robinson to return from his trip out east to confirm with him, and also to get some photos posted of our best sulfur specimens. We'll have to dig through our old photos since the collection is still in storage and I can't shoot new ones for a while. (Carpeting has now been installed in the new museum so I hope to post some new images of the building soon. We hope to start moving in in early May!)
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John Jaszczak
Joined: 05 Oct 2010
Posts: 300
Location: Hancock, MI
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Posted: Apr 19, 2011 19:04 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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Very recent discovery- cinnabar in matrix from Baraga Co., MI. Travis Olds specimen.
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Twisted crystal of cinnabar (~1 mm) in matrix; exposed from enclosing calcite. Huron River Uranium Prospect, Baraga Co., MI. |
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Jim Prentiss
Joined: 01 Dec 2009
Posts: 103
Location: Ohio
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Posted: Apr 21, 2011 13:27 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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Hi All,
I have a couple from Michigan to share today.
jimp
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This Macfallite is from the type locality at Manganese Mine, Copper Harbor, Keweenaw County, Michigan. The crystals are about 3/16" (0.48 cm) |
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Saponite from Laurium Mine, Laurium, Houghton County, Michigan. The field of view is 3 mm. One of my first attempts with Helicon Focus. I have yet to rectify my lighting issues. |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4902
Location: Barcelona
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Posted: Jan 15, 2012 13:05 Post subject: Re: A mineralogical trip through the states of USA - Michigan |
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A small beauty from the White Pine Mine
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Silver White Pine Mine, White Pine, Ontonagon County, Michigan, USA Specimen size: 3.3 × 1.6 × 0.8 cm. Photo: Reference Specimens |
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