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Three unknown specimens
  
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Eloygonzalezjr




Joined: 28 Oct 2018
Posts: 9
Location: Euless

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PostPosted: Feb 10, 2019 23:44    Post subject: Three unknown specimens  

Need help identifying these three specimens.

1st rock i think is apophyllite on something?

2nd rock i think is stilbite with some type of small crystal cluster

3rd rock that is on the stand i have no clue. looks like it has a mix of stilbite, some crystals, a black vine of something that is also in some of the stilbite area. It's very heavy. probably abpi 30 lbs



IMG_1537.jpg
 Mineral: apophyllite
 Dimensions: 25 x 15 cm
 Description:
Possibly apophyllite
 Viewed:  916 Time(s)

IMG_1537.jpg



IMG_1535.jpg
 Mineral: stilbite
 Dimensions: 30 x15 cm
 Description:
2nd rock possibly stilbite
 Viewed:  916 Time(s)

IMG_1535.jpg



IMG_1543.jpg
 Mineral: Don't know
 Dimensions: 30 x15 cm
 Description:
3rd rock pic 1
 Viewed:  921 Time(s)

IMG_1543.jpg



IMG_1539.jpg
 Mineral: Don't know
 Dimensions: 30 x15 cm
 Description:
3rd rock pic 2 - side pic
 Viewed:  916 Time(s)

IMG_1539.jpg



IMG_1544.jpg
 Mineral: Don't know
 Dimensions: 30 x15 cm
 Description:
3rd rock - side pic of black vein
 Viewed:  913 Time(s)

IMG_1544.jpg



IMG_1540.jpg
 Mineral: Don't know
 Dimensions: 30 x15 cm
 Description:
3rd rock closer side pick with black cluster
 Viewed:  918 Time(s)

IMG_1540.jpg


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Scot Krueger




Joined: 02 Feb 2019
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PostPosted: Feb 11, 2019 10:57    Post subject: Re: Three unknown specimens  

The first two definitely look like "Apophyllite and Stilbite" and "Stilbite and Laumontite(?)", both likely from India.Third one is tough just from a simple photo. When posting unknowns it often helps to list whatever you know about them. Where did you get it? If you acquired it, do you have any clues as to where it was originally collected? Locality makes a huge difference in identification of many minerals.
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Eloygonzalezjr




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PostPosted: Feb 11, 2019 12:46    Post subject: Re: Three unknown specimens  

Thank you for the information. I don’t have anything else to give on that third rock. I came across it at a store here in Texas. They do not specialize in rocks and did not know what it was. I thought it was an interesting piece so I purchased it.
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Jeff




Joined: 11 Nov 2015
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PostPosted: Feb 11, 2019 12:59    Post subject: Re: Three unknown specimens  

The first specimen looks like stilbite and calcite (the cubes). Although the specimen's georgaphic origin could very likely be India, it could also be from any number of occurrences in the Pacific Northwest -- with calcite cubes often found in association with stilbite (for example, the Mill Creek quarry in Oregon). I concur with Scot concerning the other two specimens.
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GneissWare




Joined: 07 Mar 2008
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PostPosted: Feb 14, 2019 14:45    Post subject: Re: Three unknown specimens  

Scot Krueger wrote:
The first two definitely look like "Apophyllite and Stilbite" and "Stilbite and Laumontite(?)", both likely from India.Third one is tough just from a simple photo. When posting unknowns it often helps to list whatever you know about them. Where did you get it? If you acquired it, do you have any clues as to where it was originally collected? Locality makes a huge difference in identification of many minerals.

Scott is right about the first 2 specimens. Definitely from India.
The third one looks like Calcite. A small drop of vinegar will confirm. Look for lots of fizzing. Perform on an inconspicuous spot. Looks like Mexico to me, but nothing distinctive.
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