Scapolite gallery

SCAPOLITE Gallery Return to Scapolite page. Click on image for larger view
Scapolite is a mineral group name. Members include the species meionite and marialite. When the exact species is undetermined, the group name scapolite is applied.
"SCAPOLITE" - microcline pseudomorph after scapolite Joppa Hill, Bedford, NH 12 mm prismatic crystal section with attached grossular crystals	Species: "SCAPOLITE" - microcline pseudomorph after scapolite Locality: Joppa Hill, Bedford, NH Specimen Size: 12 mm prismatic crystal section with attached grossular crystals Field Collected: Tom Mortimer Catalog No.: 512 Notes:
SCAPOLITE Joppa Hill, Bedford, NH 3.5 mm terminated crystal SCAPOLITE Joppa Hill, Bedford, NH Small scapolite crystal at top of this 3.5 cm specimen.	Species: SCAPOLITE Locality: Joppa Hill, Bedford, NH Specimen Size: 3.5 mm terminated crystal. Second view shows overall 3.5 cm specimen, small scapolite crystal at top. Field Collected: Tom Mortimer - 1990 Catalog No.: 734 Notes: Tetragonal symmetry evident when viewed down "C" axis. EDS analysis of "Scapolite" from Joppa Hill has been determined to be K feldspar pseudomorph after scapolite. This small crystal appears to be unaltered, so may possibly be scapolite. This specimen is cataloged as a pargasite specimen, because that is the prominant species present, (the green-black blades). A November, 2017 polished grain EDS analysis (BC223A) confirmed the scapolite group member, meionite. [tm] This is the first confirmed NH meionite I am aware of. Ideal meionite chemistry is: Ca₄Al₆Si₆O₂₄CO₃ The calcium dominant scapolite member. Ideal marialite chemistry is: Na₄Al₃Si₉O₂₄Cl The sodium dominant scapolite member. Chemistry from this BC223A analysis: Ca_3.92Na_0.76Al₆Cl_0.09Si_8.47O_35.3 , normalized for 6 Al. A second probed grain spot gave: Ca_3.74Na_0.92Al₆Si_8.07O_32.3 , normalized for 6 Al.
SCAPOLITE (pseudomorph) Joppa Hill, Bedford, NH 4.5 cm field of view. Tetragonal prisms of scapolite pseudomorph on matrix.	Species: SCAPOLITE (pseudomorph) Locality: Joppa Hill, Bedford, NH Specimen Size: 4.5 cm field of view. Tetragonal prisms of scapolite pseudomorph on matrix. Field Collected: Tom Mortimer - 1990 Catalog No.: 735 Notes:
SCAPOLITE (pseudomorph) Joppa Hill, Bedford, NH 4.7 cm specimen. Tetragonal of scapolite pseudomorph with pargasite blades.	Species: SCAPOLITE (pseudomorph) Locality: Joppa Hill, Bedford, NH Specimen Size: 4.7 cm specimen. Tetragonal scapolite pseudomorph with pargasite blades. Field Collected: Tom Mortimer - 1990 Catalog No.: 737 Notes: This appears to be a chrorite pseudomorph after scapolite.
SCAPOLITE - pseudomorph with Titanite Joppa Hill, Bedford, NH 4 cm specimen, scapolite prisms center SCAPOLITE - pseudomorph with Titanite Joppa Hill, Bedford, NH 2 cm zoom view. A couple dozen 1 to 3 mm titanite crystals on scapolite.	Species: SCAPOLITE - pseudomorph with Titanite Locality: Joppa Hill, Bedford, NH Specimen Size: 4 cm specimen, scapolite prisms center. Zoom view shows couple dozen 1 to 3 mm titanite crystals on the scapolite. Field Collected: Tom Mortimer - 1990 Catalog No.: TBC Notes:
SCAPOLITE (pseudomorph) Joppa Hill, Bedford, NH 6 cm specimen with 3.8 x 2 cm scapolite/pseudomorph prism.	Species: SCAPOLITE (pseudomorph) Locality: Joppa Hill, Bedford, NH Specimen Size: 6 cm specimen with 3.8 x 2 cm scapolite/pseudomorph prism. Field Collected: Tom Mortimer - 1990 Catalog No.: 1557 Notes: This is the largest scapolite/pseudomorph specimen that I found. Calcite, vesuvianite and grossular are also present on this specimen. A sample grain from this specimen provided the source for one of the EDS analyses of this material that indicated a K spar pseudomorph.
MARIALITE Twin Mtn. Quarry, Carroll, NH 5.5 cm specimen MARIALITE Twin Mtn. Quarry, Carroll, NH 2 cm field of view	Species: MARIALITE Locality: Twin Mtn. Quarry, Carroll, NH Specimen Size: Full specimen, 5.5 cm Field Collected: Bob Wilken Catalog No.: 2019 Notes: Marialite (Scapolite group) identification by EDS analysis (BC103) . (The Br is likely an assignment error by the EDS element peak association software.) The analysis showed this sample is sodium dominant, so on the marialite side of the of the meionite-marialite scapolite series. The APFU calculated from the analysis Atomic %'s gave: (Na_2.0,Ca_1.68,K_0.24)Al_3.64Si₇O₇₀Cl_0.48 For reference: Meionite: Ca₄Al₆Si₆O₂₄CO₃ Calcium dominant end member. Marialite: Na₄Al₃Si₉O₂₄Cl Sodium dominant end member. Scapolite group: (Ca,Na)₄[Al₃Si₉]O₂₄Cl
MEIONITE Road cut near the Manchester Armory site, Manchester, NH 5 cm specimen. Cream colored scapolite prisms in quartz. MEIONITE Manchester Armory site, Manchester, NH 5 cm specimen in SW UV MEIONITE Manchester Armory site, Manchester, NH 5 cm specimen. Cream colored scapolite prisms in quartz.	Species: MEIONITE (Scapolite Group) Locality: Road cut near the Manchester Armory site, Manchester, NH Specimen Size: 5 cm specimen. Cream colored scapolite prisms in quartz. Field Collected: Unknown Catalog No.: 2037 Notes: This is a Phillip Morrill listed locality. A skarn was uncovered during work on a road cut near the Manchester Armory, 1939. The find (made by a Manchester high school student) was reported in the 1939 issue of Rocks and Minerals , pg. 349. This specimen was salvaged by Dana Morong from the UNH mineral collection "de-acquisition." This is only the third specimen I [tm] have seen from this site. The other two are in the Woodman Institute, Dover, NH, collection. As of 2017, these are the best examples of NH scapolite. The number on specimen matches the number on label. The scapolite fluoresces rose color in SW UV (2nd photo) and pale-mustard-yellow in LW UV. A May 2017 EDS analysis , (BC200) gave an APFU of: (Ca_3.10,Na_0.89)Al_3.60Si_4.86O₁₇ , so definitely the calcium dominant scapolite, Meionite.
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