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

Species:Zircon var: Cyrtolite
Comments:Generally very small but euhedral crystals.
Habit:curved crystals
Colour:pale brown
Luminescent properties:yellow
Confirmation Methods:Visually Identified
References: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.
Mineral Data:Click here to view Cyrtolite data
Locality Data:Click here to view Case Quarries, Portland, Middlesex Co., Connecticut, USA
Nearest other occurrences of Cyrtolite
1.5km (1.0 miles) A Walden Gem Quarry, Portland, Middlesex Co., Connecticut, USA
1.5km (1.0 miles) B Hale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex Co., Connecticut, USA
1.8km (1.1 miles) C Andrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex Co., Connecticut, USA
1.9km (1.2 miles) D Simpson Quarry (Wiarda Quarry), South Glastonbury, Glastonbury, Hartford Co., Connecticut, USA
2.7km (1.7 miles) E Pelton's Quarry, Portland, Middlesex Co., Connecticut, USA
3.8km (2.4 miles) F Strickland Quarry (Eureka Quarry), Strickland pegmatite (Strickland-Cramer Quarry; Strickland-Cramer Mine; Strickland-Cramer Feldspar-Mica Quarries), Collins Hill, Portland, Middlesex Co., Connecticut, USA
6.1km (3.8 miles) G State Forest Quarry #2 (State Forest No. 2 Mica Mine), Cobalt, East Hampton (Chatham), Middlesex Co., Connecticut, USA
10.6km (6.6 miles) H Tollgate Quarry (Tollgate Mine; Bidwell Quarry; China-stone Quarry), Middletown, Middlesex Co., Connecticut, USA
13.7km (8.5 miles) I Slocum prospect, East Hampton (Chatham), Middlesex Co., Connecticut, USA
20.0km (12.4 miles) J Hewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry), Haddam, Middlesex Co., Connecticut, USA
69.2km (43.0 miles) K Captain Cook's Quarry (Purdy Station Quarry), Newtown, Fairfield Co., Connecticut, USA
70.9km (44.1 miles) L Biermann Quarries (Bethel quarries) and tourmaline ledge, Bethel, Fairfield Co., Connecticut, USA
81.9km (50.9 miles) M Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield Co., Connecticut, USA
86.4km (53.7 miles) N Casey Quarry (Ridgefield pegmatite), Ridgefield, Fairfield Co., Connecticut, USA
99.9km (62.1 miles) O Kinkel Quarry, Bedford, Westchester Co., New York, USA
100.4km (62.4 miles) P Bedford, Westchester Co., New York, USA
100.4km (62.4 miles) Q Baylis Quarry (Bayliss Quarry), Bedford, Westchester Co., New York, USA
100.5km (62.4 miles) R Cumberland Hill, Cumberland, Providence Co., Rhode Island, USA
101.0km (62.8 miles) S Consolidated Feldspar Mining Corporation's plant (Baylis prospect (property) & Speranza prospect (property)), Bedford, Westchester Co., New York, USA
152.0km (94.5 miles) T Blueberry Mountain Quarry (Blueberry Hill), Woburn, Middlesex Co., Massachusetts, USA
174.6km (108.5 miles) U Beryl Mountain Quarry (Beryl Mountain pegmatites; Beryl Hill; William's ledge), South Acworth, Sullivan Co., New Hampshire, USA
192.7km (119.8 miles) V Gloucester, Essex Co., Massachusetts, USA
198.0km (123.1 miles) W Rockport, Essex Co., Massachusetts, USA
198.4km (123.3 miles) X Flat Ledge Quarry (Flatledge Quarry), Rockport Granite Company quarries, Rockport, Essex Co., Massachusetts, USA
216.5km (134.5 miles) Y Overlook Quarry (Atlas Feldspar Company Quarry; Atlas Quarry; Day Quarry), Overlook, Saratoga Co., New York, USA
219.1km (136.2 miles) Z Parker Mountain Mine (Buzzo Mine; Foss Mine), Parker Mountain, Strafford, Strafford Co., New Hampshire, USA
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