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COLUMBITE-TANTALITE   Yuhas Mine, Acworth, NH
6.5 cm specimen of massive Columbite-Tantalite with minor feldspar.

Species:           COLUMBITE-TANTALITE
Locality:          Yuhas Mine, Acworth, NH
Specimen Size: 6.5 cm specimen of massive Columbite-Tantalite with minor feldspar.
Field Collected: A gift from John Jaszczak. Ex. Mrs. Robert Patterson specimen.
Catalog No.: 1746
Notes: Composition of this "Columbite-Tantalite" specimen has not been determined. File card that came with specimen indicated it was purchased 8-29-1977 for $.50.
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COLUMBITE & (SAMARSKITE?)   Ham/Weeks Mine, Wakefield, NH
4.6 cm specimen of black sub-metalic columbite-samarskite in pink feldspar.

Species:           COLUMBITE & (SAMARSKITE?)
Locality:          Ham/Weeks Mine, Wakefield, NH
Specimen Size: 4.6 cm specimen of black sub-metalic columbite-samarskite in pink feldspar.
Field Collected: Gene Bearss
Catalog No.: 1742
Notes: Gene's label on this specimen is "Columbite and Samarskite ?" Field collected 1979.
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COLUMBITE   Ham-Weeks Quarry, Wakefield, NH
7 cm specimen of nearly solid columbite.
Species:           COLUMBITE  
Locality:          Ham-Weeks Quarry, Wakefield, NH
Specimen Size: 7 cm specimen of nearly solid columbite.
Field Collected: Gene Bearss
Catalog No.: Feb., 2016 MMNE auction specimen
Notes: Right end of specimen appears to have some dark-brown, waxy, samarskite. Specimen weighs about a pound and is a single, irregular shaped, crystal.
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FERROCOLUMBITE    Palermo #1 Mine, N. Groton, NH
1.8 cm ferrocolumbite crystal with minor matrix
Species:           FERROCOLUMBITE  
Locality:         Palermo #1 Mine, N. Groton, NH
Specimen Size: 1.8 cm ferrocolumbite crystal with minor matrix
Field Collected: Bob Whitmore
Catalog No.: A Bob Whitmore specimen
Notes:
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COLUMBITE    N. Sugarloaf Mtn., Bethlehem, NH
1.8 mm crystal cluster
Species:           COLUMBITE  
Locality:          N. Sugarloaf Mtn., Bethlehem, NH
Specimen Size: 1.8 mm crystal cluster
Field Collected: Bob Willken
Catalog No.: A Bob Wilken specimen and photo
Notes: Previous analyses of N. Sugarloaf similar specimens have shown them to be of intermediate composition between Columbite-(Fe) and Tantalite-(Fe).
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COLUMBITE-(Fe)   Parker Mtn. Mine, Center Strafford, NH
8 cm specimen with 2.5 cm plate of submetallic columbite-(Fe)

Species:           COLUMBITE-(Fe)    FeNb2O6
Locality:          Parker Mtn. Mine, Center Strafford, NH
Specimen Size: 8 cm specimen with 2.5 cm plate of submetallic columbite-(Fe)
Field Collected: Gene Bearss
Catalog No.:
Notes: An EDS analysis indicated the iron dominant columbite series member.
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COLUMBITE-(Fe)   Parker Mtn. Mine, Center Strafford, NH
Approximate 3 mm crystal group on cleavelandite

Species:           COLUMBITE-(Fe)   
Locality:          Parker Mtn. Mine, Center Strafford, NH
Specimen Size: Approximate 3 mm crystal group on cleavelandite
Field Collected: Don Swenson
Catalog No.: A Don Swenson collection specimen
Notes:
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COLUMBITE-(Fe)   Parker Mtn. Mine, Center Strafford, NH
0.6 mm columbite blade crystal in cleavelandite vug

Species:           COLUMBITE-(Fe)   
Locality:          Parker Mtn. Mine, Center Strafford, NH
Specimen Size: 0.6 mm columbite blade crystal in cleavelandite vug
Field Collected: Dana Morong
Catalog No.: A Dana Morong collection specimen
Notes:
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COLUMBITE-(Fe)   Parker Mtn. Mine, Center Strafford, NH
0.7 mm group of columbite crystals in cleavelandite vug

Species:           COLUMBITE-(Fe)   
Locality:          Parker Mtn. Mine, Center Strafford, NH
Specimen Size: 0.7 mm group of columbite crystals in cleavelandite vug
Field Collected: Dana Morong
Catalog No.: A Dana Morong collection specimen
Notes:
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COLUMBITE-(Fe)    Chickering Mine, Walpole, NH
1.8 mm bleb of columbite-(Fe) in albite
Species:           COLUMBITE-(Fe)  
Locality:          Chickering Mine, Walpole, NH
Specimen Size: 1.8 mm bleb of columbite-(Fe) in albite
Field Collected: Peter Cristofono
Catalog No.: TBC
Notes: A November, 2014 EDS analysis indicated the species to be Columbite-(Fe).
EDS analyses have shown that both the Columbite-(Mn) and Columbite-(Fe) species are present at the Chickering Mine.
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COLUMBITE with Sphalerite    Colony Mine, Alstead, NH
11 cm specimen. Columbite and sphalerite in feldspar matrix
Species:           COLUMBITE with Sphalerite  
Locality:          Colony Mine, Alstead, NH
Specimen Size: 11 cm specimen. Columbite and sphalerite in feldspar matrix
Field Collected: A Ray Meyers collection specimen
Notes: May 2017 EDS analyses confirmed sphalerite with moderate iron content Zn0.8Fe0.2S1.15 and columbite (Fe0.53,Mn0.47)(Nb0.48,Ta0.02)O5.8 . This is close to the midpoint of columbite-(Fe) and columbite-(Mn). The analysis Nb + Ta is low. The APFU was normalized for Fe + Mn = 1. Arrow indicates site of analysis grain source.
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COLUMBITE    Ham-Weeks Mine, Wakefield, NH
3.2 cm specimen
Species:           COLUMBITE  
Locality:          Ham-Weeks Mine, Wakefield, NH
Specimen Size: 3.2 cm specimen
Field Collected: Don Swenson
Catalog No.: A Don Swenson specimen
Notes: Specimen gives a weak response on my scintillometer, indicating the presence of some uranium.