Post by 150FromFundy on Aug 27, 2014 19:09:05 GMT -5
I don’t normally buy unlabelled specimens, but this one was quite affordable, probably because they lost the label. I took a chance that I would be able to figure it out, but the more I examined it, the more doubt I had.
This is one of those rocks that has a whole lot of beauty when viewed under a digital microscope that reveals some of the micro-crystals that are hiding in the vugs. I’ve taken my best guess based on comparing to a few known specimens and photos on the internet. Hopefully someone can confirm an ID, or make some suggestions.
The overall specimen is crusty blue and green crystals with some clear crystals on what appears to be a limonite matrix. First guess is that it is from Mina Ojuela, Mapimi, Durango, Mexico, or a nearby vicinity.
I believe the clear crystals are Hemimorphite which forms in bladed rosettes and little ball-like spheres.
I believe the blue crystals are Rosasite which forms as little spheres and as a crust.
I believe the green crystals are Mimetite which forms as little spheres and as a crust.
Some areas have a black metallic veneer that looks a little like Goethite with a botryoidal appearance.
Some areas have a reddish brown colour which may be a colour variation of Mimetite.
Some areas have an apple green colour which may be another colour variation of Mimetite.
Some areas have a light blue colour with needle-like crystals that have the appearance of sea anemones. I have no idea what this may be.
There’s a lot going on in this specimen. Opinions (ID’s) are welcomed and appreciated. Let me know what you think.
Darryl.
This is one of those rocks that has a whole lot of beauty when viewed under a digital microscope that reveals some of the micro-crystals that are hiding in the vugs. I’ve taken my best guess based on comparing to a few known specimens and photos on the internet. Hopefully someone can confirm an ID, or make some suggestions.
The overall specimen is crusty blue and green crystals with some clear crystals on what appears to be a limonite matrix. First guess is that it is from Mina Ojuela, Mapimi, Durango, Mexico, or a nearby vicinity.
I believe the clear crystals are Hemimorphite which forms in bladed rosettes and little ball-like spheres.
I believe the blue crystals are Rosasite which forms as little spheres and as a crust.
I believe the green crystals are Mimetite which forms as little spheres and as a crust.
Some areas have a black metallic veneer that looks a little like Goethite with a botryoidal appearance.
Some areas have a reddish brown colour which may be a colour variation of Mimetite.
Some areas have an apple green colour which may be another colour variation of Mimetite.
Some areas have a light blue colour with needle-like crystals that have the appearance of sea anemones. I have no idea what this may be.
There’s a lot going on in this specimen. Opinions (ID’s) are welcomed and appreciated. Let me know what you think.
Darryl.
