| | Description | |
| Comments: | Nickelian variety. Some non-magnetic ore samples analized in the mid 19th century, tested to 25.7% nickel, less of iron and nearing the atomic ratio to qualify for identity of Pentlandite (Dufrenoy) | | Habit: | massive, laminated and granular | | Colour: | between brassy yellow and Copper red | | Quality of samples: | Poor for species, only of interest for locality collectors. (#) | | Rarity at site: | Extremely common | | Confirmation | |
| Validity: | Believed Valid | | References | |
| References: | Min.Rec.:21:103; Dana 6:1069; Dana 7:I:235,241 & II:490. (Ref 2) Second Geological Survey of Pennsylvania: 1874. Preliminary Report on the Mineralogy of Pennsylvania, F. A. Genth Pgs. 13, 14 | | Data | |
| Mineral Data: | Click here to view Pyrrhotite data | | Locality Data: | Click here to view Gap Mine (Gap Nickel Mine), Gap, Bart Township, Lancaster Co., Pennsylvania, USA |
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