Posnjakite from
Mascot Mine, Gorham, Coos County, New Hampshire, USA
| Locality type: | Mine | |
| Classification | ||
|---|---|---|
| Species: | Posnjakite | |
| Formula: | Cu4(SO4)(OH)6 · H2O | |
| Comments: | Identified by SEM and XRD at the Denver USGS lab (Gene Foord) and at the UNO lab (Jim Nizamoff & Al Flaster.) Crystals of posnjakite are fairly distinct at this site - not easily confused with other species. | |
| Habit: | Crude thick-tabular crystals with rounded edges - rarely sharp - sparse on matrix, and as crusts. | |
| Colour: | Medium greenish-blue. | |
| Luminescent properties: | none | |
| Quality for species: | Good crystals or rich for species - important (!) | |
| Confirmation | ||
| Validity: | Confirmed | |
| Confirmation Methods: | XRD | |
| Confirmation Details: | Where Tested and Reference ID: SEM-EDS and XRD by Gene Foord at USGS Lab, Denver, Colorado, USA - reaffirmed by SEM-EDS at Univ. of New Orleans by Jim Nazimoff and Al Falster. | |
| Associated Minerals Based on Photo Data: | ||
| Ramsbeckite | 8 | |
| Schulenbergite | 7 | |
| Linarite | 7 | |
| Sphalerite | 5 | |
| Galena | 4 | |
| Anglesite | 4 | |
| Pyrite | 2 | |
| Serpierite | 2 | |
| Quartz | 2 | |
| Brochantite | 1 | |
| Data | ||
| Mineral Data: | Click here to view Posnjakite data | |
| Locality Data: | Click here to view Mascot Mine, Gorham, Coos County, New Hampshire, USA | |
| Photo Gallery | View Gallery (8 photos) | |
| Data Identifiers | ||
| Mindat Occurrence Record ID: | 27974 | |
| Long-form Identifier: | 1:3:27974:3 | |
| GUID (UUID V4): | 0 | |
| References | ||
Mascot Mine, Gorham, Coos County, New Hampshire, USA