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0 item @ $0.00  

Three Little Pegmatites

Friday, 12 February 2021 08:00 AM

Three famous phosphate loaded pegmatites - The Palermo, Hagendorf, and Tip Top Pegmatites.

SOLD
Whitlockite - 50549
Whitlockite - 50549

Whitlockite

on Siderite - #50549
Locality
Palermo mine, Groton, Grafton Co., New Hampshire, United States 
Formula
Ca9Mg(PO4)6(PO3OH) 
Availability
Sold
Size
5.5 x 7 x 5 cm - Sm Cabinet 
Tagged
phosphate , pegmatite mineral  

A 4x4cm area lined with colorless Whitlockite crystals to 1mm. Ex. Dr. David London study collection.


Whitlockite

Formula
Ca9Mg(PO4)6(PO3OH) 
Crystal System
Trigonal 
Crystal Habit
Rhombohedral Crystals, Tabular, Pistolitic 
Cleavage
None, None, None 
Luster
Vitreous - Resinous 
Color
colorless, gray, gray white, yellowish, white 
Streak
white 
Class
Trigonal - Ditrigonal Pyramidal 
Fracture
Brittle - Uneven 
Hardness
Collection
Ex. Dr. David London

Whitlockite

on Siderite - #50550
Locality
Palermo mine, Groton, Grafton Co., New Hampshire, United States 
Formula
Ca9Mg(PO4)6(PO3OH) 
Availability
Sold
Size
10 x 6 x 3 cm - Cabinet 
Tagged
phosphate , pegmatite mineral  

A 4 x 1cm vug lined with well-formed 1mm, colorless Whitlockite crystals. Ex. Dr. David London study collection.


Whitlockite

Formula
Ca9Mg(PO4)6(PO3OH) 
Crystal System
Trigonal 
Crystal Habit
Rhombohedral Crystals, Tabular, Pistolitic 
Cleavage
None, None, None 
Luster
Vitreous - Resinous 
Color
colorless, gray, gray white, yellowish, white 
Streak
white 
Class
Trigonal - Ditrigonal Pyramidal 
Fracture
Brittle - Uneven 
Hardness
Collection
Ex. Dr. David London

Zwieselite

#PD54998
Locality
Hagendorf-Süd, Oberpfälzer Wald, Bavaria, Germany 
Formula
Fe2+Mn2+PO4
Availability
Sold
Size
7 x 6 x 5 cm - Sm Cabinet 
Tagged
phosphate , pegmatite mineral  

Massive, crystalline brown Zweiselite composing most of the matrix.


Zwieselite

Formula
Fe2+Mn2+PO4
Crystal System
Monoclinic 
Crystal Habit
Pseudo Cubic 
Cleavage
Good, Distinct, Indistinct 
Luster
Vitreous - Resinous 
Color
dark brown, black, black brown 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal - Uneven 
Hardness
5-5.5 
Collection
Dr. Buford Nichols Collection

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