Mineralien / Minerals / Minerales > Mineralien (Fundort) bestimmen / determine minerals

Help identify

(1/2) > >>

jennifercindrich:
I am sending this off for testing but until then I thought it would be fun to hear some of your best guesses on this one.
The location is Packsaddle Mountain, Llano Uplift in central Texas.
This specimen is on a green schist(make-up of the schist includes-albite, tourmaline, tremolite,calcite, quartz).
Very nearby(within a few cm) dravite(with Ti), garnet, epidot,k-feldspar,mica.
This deposit sits below an iron cap to include closeby- goethite, jarosite, galena, many Mn...

The specimen-
hardness and streak-too small to test
dissolves readily in HCI(no bubbles)
orthorhombic
does not dissolve in water

the FOV is 2mm
ans the second is FOV .5

smaragd123:
Cerussite?

Is this a mystery or a determination?

jennifercindrich:
I do not know what it is but would like to know.

Lynx:
Hi Jennifer

your mindat-guess austinite looks close. Though, this would need arsenic and zinc to be present at that location. Are they?
You might check for fluorescence.
Personally I would vote for cerussite...

Cheers!
Martin

jennifercindrich:
Hi Martin,

I am just determining what this site has so the As and Zn are unknown as of yet.
It does not fluoresce.

Navigation

[0] Themen-Index

[#] Nächste Seite