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Robson Vieira




Joined: 05 Jan 2017
Posts: 10
Location: São Paulo

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PostPosted: Jan 07, 2017 06:44    Post subject: ID confirmation  

Hi all right?
My name is Robson and today i would like to receive a confirmation for this mineral. I think it is an Analcime crystal. So i found it at a basaltic region close my home. It was the biggest crystal this specimen i found allthough i found other even better but smaller in amigdaloidal basalt. Properties:
Name: Unknow, possibly Analcime
Color: Ice white
Luster: Vitreous and waxy a little bit
Cleavage: Unseen
Habit: Crystal with cutted shapes like a ball soccer (the crystal is not complete)
Fracture: Imperfect; it is not conchoidal
Density: 2.25
Hardness: 5
Environment: Baslt quarry
Association: Quartz, Calcite, Jasper, Celadonite, Augite(?), Chlorastrolite, Cooper, Thomsonite, scolecite, .... and possibly Philipsite.
Other: It seems to have a partition or a very bad cleavage i dont know. It has striation at some points of its surface, as quartz has.I found other with red (hematite) and green (Celadonite) inclusions.



SAM_2918.JPG
 Mineral: Unknown
 Locality:
Cuesta (basáltica) Botucatu, São Paulo, Brazil
 Dimensions: 3,0 x 2,0 cm
 Description:
 Viewed:  866 Time(s)

SAM_2918.JPG



SAM_2919.JPG
 Mineral: Unknown
 Locality:
Cuesta (basáltica) Botucatu, São Paulo, Brazil
 Dimensions: 3,0 x 2,0 cm
 Description:
 Viewed:  851 Time(s)

SAM_2919.JPG



SAM_2920.JPG
 Mineral: Unknown
 Locality:
Cuesta (basáltica) Botucatu, São Paulo, Brazil
 Dimensions: 3,0 x 2,0 cm
 Description:
 Viewed:  846 Time(s)

SAM_2920.JPG



SAM_2921.JPG
 Mineral: Unknown
 Locality:
Cuesta (basáltica) Botucatu, São Paulo, Brazil
 Dimensions: 3,0 x 2,0 cm
 Description:
 Viewed:  847 Time(s)

SAM_2921.JPG


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Pete Richards
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Joined: 29 Dec 2008
Posts: 546
Location: Northeast Ohio


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PostPosted: Jan 07, 2017 10:08    Post subject: Re: ID confirmation  

It is probably analcime, as you indicate. Thanks for doing all those diagnostic tests.
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Collecting and studying crystals with interesting habits, twinning, and epitaxy
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Robson Vieira




Joined: 05 Jan 2017
Posts: 10
Location: São Paulo

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PostPosted: Jan 07, 2017 13:36    Post subject: Re: ID confirmation  

Hi Pete. Thank you for your opinion. It was very important. I will looking for more samples of that and its associated 'friends'. Regards
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