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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Opal from
Dog's Head Tier, Interlaken, Central Highlands municipality, Tasmania, Australia


Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Dog's Head Tier, Interlaken, Central Highlands municipality, Tasmania, Australia
Data Identifiers
Mindat Occurrence Record ID:1892847
Long-form Identifier:1:3:1892847:3
GUID (UUID V4):0
Nearest other occurrences of Opal
54.6km (33.9 miles) ⓘBenham plains, Avoca-Royal George mining district, Northern Midlands municipality, Tasmania, Australia
66.9km (41.6 miles) ⓘBoral Quarry, Bridgewater, Brighton municipality, Tasmania, Australia
68.6km (42.6 miles) ⓘRosegarland, Derwent Valley municipality, Tasmania, Australia
79.8km (49.6 miles) ⓘShag Bay, Risdon, Clarence City, Tasmania, Australia
87.8km (54.6 miles) ⓘMt Nelson quarry, Tolmans Hill, Hobart City, Tasmania, Australia
88.2km (54.8 miles) ⓘLower Sandy Bay, Hobart city, Tasmania, Australia
98.1km (61.0 miles) ⓘLime Bay, Tasman Municipality, Tasmania, Australia
References
Mathew Latham collectionIdentified by Mathew Latham: Visual Identification
 
and/or  
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