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A mineralogical trip through the states of USA - Michigan
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Jordi Fabre
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PostPosted: Apr 15, 2011 10:53    Post subject: A mineralogical trip through the states of USA - Michigan  

Michigan the "Great Lakes State"




Copper - Cliff mine_Phoenix_Keweenaw Co._Michigan_USA.jpg
 Description:
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!
 Viewed:  27928 Time(s)

Copper - Cliff mine_Phoenix_Keweenaw Co._Michigan_USA.jpg


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Joaquin Montoro




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PostPosted: Apr 15, 2011 14:22    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

An emblematic mineral from this state...


PICT2038.JPG
 Description:
Domeykite (Mohawkite).- Mohawk Mine, Keweenaw Co. Michigan (USA) 10x6x4 cm. 1042 grams of this rare copper arsenide.
 Viewed:  27861 Time(s)

PICT2038.JPG



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John Jaszczak




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PostPosted: Apr 15, 2011 17:20    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

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.


JTR673.jpg
 Description:
Copper, Calcite, Datolite. Quincy mine, Hancock, MI.
 Viewed:  27847 Time(s)

JTR673.jpg


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PostPosted: Apr 16, 2011 10:35    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

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.


JTR939.jpg
 Description:
Copper possible pseudomorph after laumontite.
 Viewed:  27788 Time(s)

JTR939.jpg


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PostPosted: Apr 16, 2011 18:10    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

Former collection of Al Ordway


DSCN0808.JPG
 Description:
Analcime
Bohemian Mine,
Houghton, Michigan
5.0cm x 3.2cm
 Viewed:  27773 Time(s)

DSCN0808.JPG


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PostPosted: Apr 16, 2011 18:15    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

Former colelctions of Harvard and Marion Godshaw


DSCN0810.JPG
 Description:
Manganite with Baryte Rose
Negaunee, Michigan
5.6cm x 5.0cm
 Viewed:  27821 Time(s)

DSCN0810.JPG


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PostPosted: Apr 16, 2011 18:20    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

I have never seen any others from here, and neither had the well know dealer I got it from


DSCN0812.JPG
 Description:
Sulfer after Celestite
Scofield Quarry,
Maybee, Michgan
4.0cm x 3.7cm
 Viewed:  27762 Time(s)

DSCN0812.JPG


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John Jaszczak




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PostPosted: Apr 16, 2011 18:32    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

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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PostPosted: Apr 16, 2011 18:43    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

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.


431-02.JPG
 Description:
Copper, Calcite and Baryte. White Pine Mine, Ontonagon Co., Michigan.
 Viewed:  27749 Time(s)

431-02.JPG


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PostPosted: Apr 16, 2011 19:36    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

Here are a few more Michigan pieces to add to the mix.


GW000892.JPG
 Description:
Celestine and Calcite on Limestone

Newport Quarry
Newport
Monroe County, Michigan
United States of America

16.5 x 11.0 cm overall
 Viewed:  27739 Time(s)

GW000892.JPG



GW001029.JPG
 Description:
Silver and Copper

Adventure Mine
Greenland
Ontonagan County, Michigan
United States of America

7.8 x 5.4 x 3.9 cm overall
 Viewed:  27759 Time(s)

GW001029.JPG



GW001046.JPG
 Description:
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
 Viewed:  27762 Time(s)

GW001046.JPG



GW001188.JPG
 Description:
Copper

Champion Mine
Painesdale
Houghton County, Michigan
United States of America

13.6 x 4.5 x 3.1 cm overall
 Viewed:  27769 Time(s)

GW001188.JPG



GW001245.JPG
 Description:
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
 Viewed:  27755 Time(s)

GW001245.JPG



GW000741.JPG
 Description:
Celestine with Calcite

Maybee
Michigan
United States of America

6.4 x 5.5 x 3.5 cm overall
 Viewed:  27751 Time(s)

GW000741.JPG


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am mizunaka




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PostPosted: Apr 17, 2011 07:35    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

A few for Michigan.


Celestine.jpg
 Description:
Celestine and Calcite
Monroe County, Michigan
Specimen size 10.5 x 9.5 cm.
 Viewed:  27709 Time(s)

Celestine.jpg



CopperCalcite.jpg
 Description:
Calcite included with Copper
Calumet, Houghton Co., Michigan
Specimen size 2 x 2.7 cm.
 Viewed:  27692 Time(s)

CopperCalcite.jpg



BigCalCop.jpg
 Description:
Calcite with Copper
Keweenaw Peninsula, Michigan
Specimen size 8.5 x 5.2 cm.
 Viewed:  27693 Time(s)

BigCalCop.jpg


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PostPosted: Apr 17, 2011 10:05    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

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?

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Antonio Alcaide
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PostPosted: Apr 19, 2011 07:20    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

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



pict8772_110.jpg
 Description:
Suphur with tiny calcite crystals. Maybee, Monroe Co., Michigan. 7,5 x 5 cm. Main crystal measuring 3 cm.
 Viewed:  27543 Time(s)

pict8772_110.jpg



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PostPosted: Apr 19, 2011 09:24    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

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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PostPosted: Apr 19, 2011 10:36    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

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

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PostPosted: Apr 19, 2011 13:17    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

Still hoping for a response from rweaver to my inquiry about the sulfur pseudomorph after celestine. Perhaps John Jaszczak might weigh in on this.
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PostPosted: Apr 19, 2011 13:25    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

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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PostPosted: Apr 19, 2011 19:04    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

Very recent discovery- cinnabar in matrix from Baraga Co., MI. Travis Olds specimen.


Huron River cinnabar-1mm-sm.JPG
 Description:
Twisted crystal of cinnabar (~1 mm) in matrix; exposed from enclosing calcite. Huron River Uranium Prospect, Baraga Co., MI.
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Huron River cinnabar-1mm-sm.JPG


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PostPosted: Apr 21, 2011 13:27    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

Hi All,

I have a couple from Michigan to share today.

jimp



Macfallite 01b.JPG
 Description:
This Macfallite is from the type locality at Manganese Mine, Copper Harbor, Keweenaw County,
Michigan. The crystals are about 3/16" (0.48 cm)
 Viewed:  27323 Time(s)

Macfallite 01b.JPG



Saponite 01d.jpg
 Description:
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.
 Viewed:  27271 Time(s)

Saponite 01d.jpg


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PostPosted: Jan 15, 2012 13:05    Post subject: Re: A mineralogical trip through the states of USA - Michigan  

A small beauty from the White Pine Mine


Silver - White Pine Mine_White Pine_Ontonagon County_Michigan_USA.jpg
 Description:
Silver
White Pine Mine, White Pine, Ontonagon County, Michigan, USA
Specimen size: 3.3 × 1.6 × 0.8 cm.
Photo: Reference Specimens
 Viewed:  24849 Time(s)

Silver - White Pine Mine_White Pine_Ontonagon County_Michigan_USA.jpg


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