Merrillite-(Ca)
A material that is NOT an approved mineral species
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Formula:
(Ca,â—»)19Mg2(PO4)14
Crystal System:
Trigonal
Name:
Named after George Perkins Merrill (1854-1929), meteorite specialist at U. S. National Museum, Smithsonian Institution, Washington, D.C. USA.
This page provides mineralogical data about Merrillite-(Ca).
Unique Identifiers
Mindat ID:
7175
Long-form identifier:
mindat:1:1:7175:4
GUID
(UUID V4):
(UUID V4):
9a24937a-5fe3-4e87-b532-ecab7529a43e
Classification of Merrillite-(Ca)
38.3.4.3
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
3 : (AB)3(XO4)2
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
3 : (AB)3(XO4)2
Optical Data of Merrillite-(Ca)
Type:
Uniaxial (-)
RI values:
nω = 1.323 - 1.623 nε = 1.620
Max Birefringence:
δ = 0.297
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Low
Chemical Properties of Merrillite-(Ca)
Formula:
(Ca,â—»)19Mg2(PO4)14
Elements listed:
Crystallography of Merrillite-(Ca)
Crystal System:
Trigonal
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-(Ca)
mindat.org URL:
https://www.mindat.org/min-7175.html
Please feel free to link to this page.
Please feel free to link to this page.
Mineral Dealers:
References for Merrillite-(Ca)
Reference List: