| | Description | |
| Type Locality: | Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA is the type locality for Hardystonite | | Quality of samples: | Excellent - world class for species or very significant. (!!) | | Rarity at site: | Very common | | Confirmation | |
| Validity: | Believed Valid | | References | |
| References: | Palache(1935):94; Dunn(1995):Pt3:411-412. | | Data | |
| Mineral Data: | Click here to view Hardystonite data | | Locality Data: | Click here to view Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA | | Photo Gallery | View Gallery (12 photos) |
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