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Tourmaline from
Trail Mine, Mesa Grande, Mesa Grande Mining District, San Diego County, California, USA

Locality type:Mine
Classification
Species:'Tourmaline' (not an IMA approved species)
Formula:A(D3)G6(Si6O18)(BO3)3X3Z
Confirmation
Validity:Believed Valid
References
References:Weber, F. H. 1963. Geology and mineral resources of San Diego County, California. California Division of Mines and Geology, County Report 3: p. 113.
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view Trail Mine, Mesa Grande, Mesa Grande Mining District, San Diego County, California, USA
Nearest other occurrences of Tourmaline
0.3km (0.2 miles) Esmeralda Mine, Mesa Grande, Mesa Grande Mining District, San Diego County, California, USA
1.3km (0.8 miles) Payne Mine, Gem Hill, Mesa Grande Mining District, San Diego County, California, USA
1.4km (0.9 miles) Green Ledge Mine (Green Ledge dike), Gem Hill, Mesa Grande Mining District, San Diego County, California, USA
1.5km (0.9 miles) Rose Quartz Mine (Patton lode; Patten lode; Powers group; Crystal Quartz; White Quartz; Sante Fe Gem), Mesa Grande, Mesa Grande Mining District, San Diego County, California, USA
1.7km (1.0 miles) Cota Mine, Gem Hill, Mesa Grande Mining District, San Diego County, California, USA
2.0km (1.2 miles) Braye Mine (Bray Lode prospect; MS 4633), Himalaya Mine (Himalaya dikes; Himalaya pegmatite), Gem Hill, Mesa Grande Mining District, San Diego County, California, USA
2.2km (1.4 miles) Trask mine, San Diego Mine (K. C. Naylor mine), Gem Hill, Mesa Grande Mining District, San Diego County, California, USA
2.3km (1.4 miles) Himalaya Mine (Himalaya dikes; Himalaya pegmatite), Gem Hill, Mesa Grande Mining District, San Diego County, California, USA
2.4km (1.5 miles) San Diego Mine (K. C. Naylor mine), Gem Hill, Mesa Grande Mining District, San Diego County, California, USA
2.4km (1.5 miles) Mesa Grande Mine, Gem Hill, Mesa Grande Mining District, San Diego County, California, USA
 
Mineral and/or Locality  
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