Fluorite (interpenetrant-twinned crystals) from Blackdene Mine, Ireshopeburn, Weardale, County Durham, England
Photo below under shortwave ultraviolet illumination:
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| DESCRIPTION: | No. 64345
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| Mineral: | Fluorite (interpenetrant-twinned crystals)
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| Locality: | Blackdene Mine, Ireshopeburn, Weardale, County Durham, England |
| Description: | Lustrous transparent purple cubic fluorite crystals to 8 mm on an earlier generation of colorless fluorite-quartz. The fluorite crystals are interpenetrant-twinned and fluoresce violet under UV. |
| Overall Size: | 8x4.5x3.5 cm |
| Crystals: | 2-8 mm |
| Archived: | For reference only |
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