Mindat Logo
Home Page Log In Messageboard The Mindat Directory
Register Search Pages Mineral Chatroom The Mindat Store

Magnesiopascoite

This page is currently not sponsored. Click here to sponsor this page.
Big Photo

Blue Cap Mine, Lyon Canyon Creek, La Sal District (Paradox Valley District), San Juan Co., Utah, USA

Show Magnesiopascoite Photos (4)



Formula:
Ca
 
2
Mg(V
 
10
O
 
28
) · 16H
 
2
O
System:Monoclinic
Member of:Pascoite Group
Name:relation to pascoite, the Magnesium analogue of pascoite


Pascoite group

Classification of Magnesiopascoite

IMA status:Approved 2007
Strunz 9th edition ID:4.HC.05
Nickel-Strunz 10th (pending) edition ID:4.HC.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
C : [6]-Sorovanadates
Dana 8th edition ID:47.3.6.3

47 : VANADIUM OXYSALTS
3 : Hydrated Normal Vanadium Oxysalts
mindat.org URL:http://www.mindat.org/min-32206.html
Please feel free to link to this page.

Type Occurrence of Magnesiopascoite

Type Locality:Blue Cap Mine, Lyon Canyon Creek, La Sal District (Paradox Valley District), San Juan Co., Utah, USA
General Appearance of Type Material:parallel stacks of lustrous crystals that vary from tabular to equant to prismatic
Place of Conservation of Type Material:Natural History Museum of Los Angeles County, California, USA, (catalog numbers 58610 and 58611; the same type specimens as martyite)
Associated Minerals at type locality:
RossitePyriteMontroseiteMartyiteGypsum

Crystallography of Magnesiopascoite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:B2/m {B1 1 2/m} {C2/m} {C1 2/m 1}
Cell Parameters:a = 19.8442Å, b = 9.9353Å, c = 10.7149Å
β = 120.305°
Ratio:a:b:c = 1.997 : 1 : 1.078
Unit Cell Volume:V 1823.9 ų
Z:2
Morphology:crystals vary in aspect from tabular to equant to prismatic. {001} prominent. Other forms include {302}, {401}, {112}, {113}, {11-1}, {11-2}, {22-3}, and {33-1)
Twinning:none observed
X-Ray Powder Diffraction:
d-spacingIntensity
9.242 (20)
8.872 (30)
8.571 (100)
7.270 (40)
5.477 (15)
4.590 (15)
4.355 (15)
2.137 (20)

Optical Data of Magnesiopascoite

Type:Biaxial (-)
RI values: nα = 1.769(3) nβ = 1.802(3) nγ = 1.807(3)
2V:Measured: 45° (5)
Maximum Birefringence:δ = 0.038

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:r < v, crossed
Comments:Y (orange) > X (yellow, Z (yellow)

Chemical Properties of Magnesiopascoite

Formula:
Ca
 
2
Mg(V
 
10
O
 
28
) · 16H
 
2
O
Essential elements:Ca, H, Mg, O, V
All elements listed in formula:Ca, H, Mg, O, V

Relationship of Magnesiopascoite to other Species

Member of:Pascoite Group
Other Members of Group:

- +
Huemulite
Na
 
4
Mg(V
 
10
O
 
28
) · 24H
 
2
O
Hummerite
K
 
2
Mg
 
2
(V
 
10
O
 
28
) · 16H
 
2
O
Lasalite
Na
 
2
Mg
 
2
(V
 
10
O
 
28
) · 20H
 
2
O
Pascoite
Ca
 
3
(V
 
10
O
 
28
) · 17H
 
2
O
Rakovanite
Na
 
3
(H
 
3
V
 
10
O
 
28
) · 15H
 
2
O
Related Minerals - Nickel-Strunz Grouping):

- +
4.HC.05Pascoite
Ca
 
3
(V
 
10
O
 
28
) · 17H
 
2
O
4.HC.05Lasalite
Na
 
2
Mg
 
2
(V
 
10
O
 
28
) · 20H
 
2
O
4.HC.10Hummerite
K
 
2
Mg
 
2
(V
 
10
O
 
28
) · 16H
 
2
O
4.HC.15Sherwoodite
Ca
 
4.5
(AlV
4+
2
V
5+
12
O
 
40
) · 28H
 
2
O

Other Names for Magnesiopascoite

Synonyms:
IMA2007-025
Other Languages:
Simplified Chinese:镁橙钒钙石

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Magnesiopascoite

Reference List:

- +
Kampf, A.R. & I.M. Steele: Magnesiopascoite, a new member of the pascoite group: description and crystal structure. Canadian Mineralogist 46,679-686(2008)

Internet Links for Magnesiopascoite

Search Engines:
  • Look for Magnesiopascoite on Google
  • Look for Magnesiopascoite images on Google
    • External Links:
  • Look for Magnesiopascoite on Webmineral
  • Look for Magnesiopascoite on Athena Mineralogy
  • Look for Magnesiopascoite on Wikipedia
  • Look for Magnesiopascoite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
    • Mineral Dealers:
  • Fine and rare minerals from mintreasure.com
  • Wilensky Fine Minerals
  • Buy minerals from YourMineralCollection
  • The Arkenstone - Fine Minerals
  • Magnesiopascoite specimens for sale - minfind.com
  • Search for Magnesiopascoite on Well-Arranged Molecules
  • Buy fine minerals and gemstones from Pala International
  • rare and unusual minerals mainly crystallized
  • Search for minerals at Heliodor
  • Find Magnesiopascoite on www.crystalclassics.co.uk
  • Buy RARE Minerals from Rocks of Africa
  • Fabre Minerals - search for Magnesiopascoite specimens
    • Jobs:
  • Mining & Geology Jobs

    • Localities for Magnesiopascoite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    USA
     
    • Utah
      • San Juan Co.
        • La Sal District (Paradox Valley District)
          • La Sal Creek Canyon
    		Can.Min. 46,679-686(2008)
          • Lyon Canyon Creek
    		Can.Min.46,679-686(2008)
        • La Sal Quadrangle
    		Gunnar Farber
    Mineral and/or Locality
    Search Google
     
    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: 28th Jan 2013 13:58:25
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds