Merrillite Subgroup
A group of related mineral species
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About Merrillite Subgroup
Member of:
A subgroup with the Merrillite group, which is itself within the greater Cerite Supergroup; new group nomenclature established by IMA in September 2020.
Unique Identifiers
Mindat ID:
55119
Long-form identifier:
mindat:1:1:55119:3
GUID
(UUID V4):
(UUID V4):
ea14be77-93cf-4ccf-8f69-441258c30023
IMA Classification of Merrillite Subgroup
IMA status notes:
IMA Approved Group Name
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
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Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
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Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0004238 | Merrillite | Hughes J M, Jolliff B L, Gunter M E (2006) The atomic arrangement of merrillite from the Fra Mauro Formation, Apollo 14 lunar mission: The first structure of merrillite from the Moon American Mineralogist 91 1547-1552 | 2006 | 0 | 293 | ||
0004626 | Merrillite | Hughes J M, Jolliff B L, Rakovan J (2008) The crystal chemistry of whitlockite and merrillite and the dehydrogenation of whitlockite to merrillite by heating at 1050 degrees C for 24 hours American Mineralogist 93 1300-1305 | 2008 | synthetic | 0 | 293 | |
0020386 | Merrillite | Xie X, Yang H, Gu X, Downs R T (2015) Chemical composition and crystal structure of merrillite from the Suizhou meteorite American Mineralogist 100 2753-2756 | 2015 | Suizhou meteorite | 0 | 293 | |
0018313 | Merrillite | Dowty E (1977) Phosphate in Angra Dos Reis: Structure and composition of the Ca3(PO4)2 minerals Earth and Planetary Science Letters 35 347-351 | 1977 | Angra Dos Reis meteorite | 0 | 293 |
CIF Raw Data - click here to close
Relationship of Merrillite Subgroup to other Species
Member of:
Other Members of this group:
Changesite–(Y) | (Ca8Y)◻Fe2+(PO4)7 | Trig. 3m : R3c |
Deynekoite | Ca9Fe3+(PO4)7 | Trig. 3m : R3c |
Whitlockite Subgroup | Group of structurally complex Ca-metal-phosphates. |
Group Members:
Ferromerrillite | Ca9NaFe2+(PO4)7 | Trig. 3m : R3c |
Keplerite | Ca9(Ca0.5◻0.5)Mg(PO4)7 | Trig. 3m : R3c |
Matyhite | Ca18(Ca,◻)2Fe2+2(PO4)14 | Trig. 3m : R3c |
Merrillite | Ca9NaMg(PO4)7 | Trig. 3m : R3m |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Merrillite Subgroup
mindat.org URL:
https://www.mindat.org/min-55119.html
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Please feel free to link to this page.
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