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Heliodor from
Case Quarries, Portland, Middlesex Co., Connecticut, USA

Erratic type:
Classification
Species:Beryl var: Heliodor
Comments:Much less common than the green and blue varieties.
Habit:elongated to short hexagonal prisms
Colour:yellow
Abundance at site:Rare
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
References
References:Cameron, Eugene N., Larrabee David M., McNair, Andrew H., Page, James T., Stewart, Glenn W., and Shainin, Vincent E. (1954), Pegmatite Investigations 1942-45 New England. USGS Professional Paper 255.; Schooner, Richard. (1958), The Mineralogy of the Portland-East Hampton-Middletown-Haddam Area in Connecticut (With a few notes on Glastonbury and Marlborough). Published by Richard Schooner; Ralph Lieser of Pappy’s Beryl Shop, East Hampton; and Howard Pate of Fluorescent House, Branford, Connecticut.
Data
Mineral Data:Click here to view Heliodor data
Locality Data:Click here to view Case Quarries, Portland, Middlesex Co., Connecticut, USA
Nearest other occurrences of Heliodor
1.5km (1.0 miles) A Walden Gem Quarry, Portland, Middlesex Co., Connecticut, USA
1.9km (1.2 miles) B Simpson Quarry (Wiarda Quarry), South Glastonbury, Glastonbury, Hartford Co., Connecticut, USA
3.7km (2.3 miles) C Schoonmaker Mine (Cramer Mine), Strickland pegmatite (Strickland-Cramer Quarry; Strickland-Cramer Mine; Strickland-Cramer Feldspar-Mica Quarries), Collins Hill, Portland, Middlesex Co., Connecticut, USA
3.8km (2.4 miles) D Strickland Quarry (Eureka Quarry), Strickland pegmatite (Strickland-Cramer Quarry; Strickland-Cramer Mine; Strickland-Cramer Feldspar-Mica Quarries), Collins Hill, Portland, Middlesex Co., Connecticut, USA
11.0km (6.8 miles) E Becker Quarry, East Hampton (Chatham), Middlesex Co., Connecticut, USA
13.0km (8.1 miles) F Anderson No. 1 Mica Mine (Swanson Mine; Swanson Lithia Mine), East Hampton (Chatham), Middlesex Co., Connecticut, USA
13.7km (8.5 miles) G Slocum prospect, East Hampton (Chatham), Middlesex Co., Connecticut, USA
19.4km (12.1 miles) H Civilian Conservation Corps prospect (CCC prospect; Cook columbite prospect), Haddam, Middlesex Co., Connecticut, USA
20.0km (12.4 miles) I Hewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry), Haddam, Middlesex Co., Connecticut, USA
68.5km (42.6 miles) J Blandford mica mines, Blandford, Hampden Co., Massachusetts, USA
71.1km (44.2 miles) K New England Mining Company Quarry (Roebling Mine; Hewitt's Mine), Upper Merryall, New Milford, Litchfield Co., Connecticut, USA
81.9km (50.9 miles) L Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield Co., Connecticut, USA
100.4km (62.4 miles) M Bedford, Westchester Co., New York, USA
119.5km (74.2 miles) N Northfield, Franklin Co., Massachusetts, USA
121.4km (75.4 miles) O Royalston, Worcester Co., Massachusetts, USA
123.6km (76.8 miles) P Rollstone Hill Quarry, Fitchburg, Worcester Co., Massachusetts, USA
128.8km (80.1 miles) Q Pearl Hill, Fitchburg, Worcester Co., Massachusetts, USA
160.7km (99.8 miles) R Kirk No. 2 Quarry (Kirk No. 2 Mica Mine; Blake Quarry; Blake Mine), Gilsum, Cheshire Co., New Hampshire, USA
174.6km (108.5 miles) S Beryl Mountain Quarry (Beryl Mountain pegmatites; Beryl Hill; William's ledge), South Acworth, Sullivan Co., New Hampshire, USA
223.8km (139.1 miles) T Ruggles Mine, Grafton, Grafton Co., New Hampshire, USA
Mineral and/or Locality  
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