BERTRANDITE    Gallery                        Return to Bertrandite page.                  Click on image for larger view

Highslide JS
BERTRANDITE   N. Sugarloaf Mtn., Bethlehem, NH
6 mm specimen. Bertrandite on quartz crystal

Species:           BERTRANDITE
Locality:          N. Sugarloaf Mtn., Bethlehem, NH
Specimen Size: 6 mm specimen. Bertrandite on quartz crystal.
Field Collected: Bob Janules
Catalog No.: A Bob Janules specimen
Notes: A stack of 54 images through Meiji scope. A larger specimen with a lot to get into focus. I made two attempts. Not a particularly satisfying result.
Highslide JS
BERTRANDITE   N. Sugarloaf Mtn., Bethlehem, NH
0.7 mm bertrandite crystal group

Species:           BERTRANDITE
Locality:          N. Sugarloaf Mtn., Bethlehem, NH
Specimen Size: 0.7 mm bertrandite crystal group
Field Collected: Bob Janules
Catalog No.: A Bob Janules specimen
Notes: A stack of 27 images with Nikon objective.
Highslide JS
BERTRANDITE   Government Pit ? Moat Mtn., Albany, NH
1.2 mm bertrandite crystal, partially embedded in microcline. A typical rectangular-tabular bertrandite habit.
Species:           BERTRANDITE
Locality:          Government Pit ? Moat Mtn., Albany, NH
Specimen Size: 1.2 mm bertrandite crystal, partially embedded in microcline. A typical rectangular-tabular bertrandite habit.
Field Collected: Leroy Grant
Catalog No.: u2271
Notes: Overall 2 cm specimen has typical Moat Mt, smoky quartz and microcline crystals. Found in Leroy Grant egg carton with many small, loose smoky quartz crystals.
Photo with Canon T3i, with Nikon Plan 10 microscope objective.
Highslide JS
BERTRANDITE  Mud Pond, Ossipee, NH
2.5 mm crystal

Species:           BERTRANDITE
Locality:          Mud Pond, Ossipee, NH
Specimen Size: 2.5 mm crystal
Field Collected: Bob Wilken
Catalog No.: A Bob Wilken specimen and photo
Notes:
Highslide JS
BERTRANDITE  Mud Pond, Ossipee, NH
0.75 mm crystal group

Species:           BERTRANDITE
Locality:          Mud Pond, Ossipee, NH
Specimen Size: 0.75 mm crystal group
Field Collected: Bob Wilken
Catalog No.: A Bob Wilken specimen and photo
Notes:
Highslide JS
BERTRANDITE   Water Pocket Locality, Albany, NH
1.5 mm field of view


Highslide JS
BERTRANDITE    Vicinity of Water Pocket, Bartlett, NH
PLM image of bertrandite grain

Highslide JS
BERTRANDITE    Vicinity of Water Pocket, Bartlett, NH
PLM image of bertrandite grain, The same figure with the full wave plate inserted to test for optically positive / negative since the inside of the bullseye bar turns blue and the outside turns yellow this means it's negative
Species:           BERTRANDITE
Locality:          Water Pocket Locality, Albany, NH
Specimen Size: 1.5 mm field of view
Field Collected: Bob Wilken
Catalog No.: A Matt Butler specimen photo and PLM images
Notes: Matt reported: "The PLM interference figure image 'best matches' an acute biaxial figure. In this case only the lower right part of it is in the view of my scope at 63x so we can only see one of the 'bullseyes' instead of both. The 2nd image is with a full wave plate filter inserted, and it shows the color change to blue at the bottom of the "bullseye" confirming the xl is optically negative which also matches bertrandite."
Highslide JS
BERTRANDITE   Keyes #1 Mine, Orange, NH
0.2 mm bertrandite crystal


Highslide JS
BERTRANDITE   Keyes #1 Mine, Orange, NH
0.2 mm bertrandite crystals

Species:           BERTRANDITE
Locality:          Keyes #1 Mine, Orange, NH
Specimen Size: 0.2 mm bertrandite crystals
Field Collected: Tom Mortimer - 1991
Catalog No.: u393
Notes: These tiny bertrandite crystals are on the u393 apatite.
Highslide JS
BERTRANDITE    New Hampshire
6 mm field of view
Species:           BERTRANDITE  
Locality:          New Hampshire
Specimen Size: 6 mm field of view.
Field Collected: B. Gilker - 1980's
Catalog No.: u099
Notes: The Gilkers were an older couple that lived in Amherst, NH for many yeras. They were members of the Nashua Mineral Society to which I also belonged. When they moved away (1992), they invited me to their home to see if I wanted any of the material they were leaving behind. I saw little that I wanted, but did spot a feldspar chunk with many micro bertrandite crystals, (in the house roof drip-line area). Unfortunately, they did not recall where they had found it, but were quite certain that it was from one of their New Hampshire collecting trips. These are quite nice for NH bertrandites. A good example of the importance of recording where your specimens were collected.
The granular material on the crystals is bonded to the bertrandite. There appears to be some green mineral included in this, perhaps epidote.
Highslide JS
BERTRANDITE    Beauregard Mine, Alstead, NH
1.5 mm field of view. Horizontally oriented clear bertrandite prisms.
Species:           BERTRANDITE  
Locality:          Beauregard Mine, Alstead, NH
Specimen Size: 1.5 mm field of view. Horizontally oriented clear bertrandite prisms.
Field Collected: Tom Mortimer
Catalog No.: u1444
Notes: At the Beauregard Mine bertrandite is found in highly altered beryl crystals. Big crystal collectors usually reject these. Often these crude, brown-tan crystals have to be broken open to expose the micro bertrandite.
            Go to bertrandite gallery page    1   2  4