Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Rosasite from
Mascot Mine, Gorham, Coos County, New Hampshire, USA


06753260017369250895815.jpg
Rosasite

Mascot Mine, Gorham, Coos County, New Hampshire, USA
09587130017369250898634.jpg
Rosasite

Mascot Mine, Gorham, Coos County, New Hampshire, USA
03090730017272022721247.jpg
Rosasite, etc.

Mascot Mine, Gorham, Coos County, New Hampshire, USA
09758990017365319714981.jpg
Rosasite

Mascot Mine, Gorham, Coos County, New Hampshire, USA
02654320017365319726202.jpg
Rosasite

Mascot Mine, Gorham, Coos County, New Hampshire, USA
03192890017369250909873.jpg
Rosasite, etc.

Mascot Mine, Gorham, Coos County, New Hampshire, USA
06753260017369250895815.jpg
Rosasite

Mascot Mine, Gorham, Coos County, New Hampshire, USA
09587130017369250898634.jpg
Rosasite

Mascot Mine, Gorham, Coos County, New Hampshire, USA
03090730017272022721247.jpg
Rosasite, etc.

Mascot Mine, Gorham, Coos County, New Hampshire, USA
Locality type:Mine
Classification
Species:Rosasite
Formula:(Cu,Zn)2(CO3)(OH)2
Comments:Mascot Mine "Unknown #7" - Once thought to be habits of the posnjakite found here, but SEM-EDS shows both Cu and Zn in significant quantities, suggesting the likelihood of it being rosasite - or possibly even claraite. It will take XRD analysis to determine the species.
Habit:Micro-crusts, sometimes sub-botryoidal to botryoidal, more rarely as crudely tabular micro-crystals.
Colour:Bright, vivid, sky-blue with a waxy luster.
Luminescent properties:none
Abundance at site:Rare
Confirmation
Validity:Unconfirmed/Questioned
Associated Minerals Based on Photo Data:
Cerussite1
Pyrite1
Quartz1
Sphalerite1
Data
Mineral Data:Click here to view Rosasite data
Locality Data:Click here to view Mascot Mine, Gorham, Coos County, New Hampshire, USA
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:27976
Long-form Identifier:1:3:27976:1
GUID (UUID V4):0
References
A. Plante collection
B. Janules collection
et.al.
 
and/or  
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