登录注册
主页关于 MindatMindat手册Mindat的历史版权Who We Are联系我们于 Mindat.org刊登广告
捐赠给 MindatCorporate Sponsorship赞助板页已赞助的板页在 Mindat刊登 广告的广告商于 Mindat.org刊登广告
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe Elements书籍及杂志
搜索矿物的性质搜索矿物的化学Advanced Locality Search随意显示任何一 种矿物Random Locality使用minID搜索邻近产地Search Articles搜索词汇表更多搜索选项
搜索:
矿物名称:
地区产地名称:
关键字:
 
Mindat手册添加新照片Rate Photos产区编辑报告Coordinate Completion Report添加词汇表项目
Mining Companies统计会员列表Mineral Museums矿物展及活动The Mindat目录表设备设置
照片搜索Photo Galleries今天最新的照片昨天最新的照片用户照片相集过去每日精选照片相集Mineral Photography

Gatehouseite

This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About GatehouseiteHide

08595820015423278346593.jpg
Bryan M. K. C. Gatehouse
Formula:
Mn2+5(PO4)2(OH)4
Colour:
Pale yellow. Occasionally light reddish orange to light reddish brown and may be confused with arsenoclasite.
Lustre:
Adamantine, Sub-Adamantine, Greasy
Hardness:
4
Specific Gravity:
3.74 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in 1993 by Alan Pring and William. D. Birch in honor of Dr. Bryan Michael Kenneth Cummings Gatehouse (3 January 1932 - 18 September 2014), crystal chemist who contributed to the understanding of oxides and oxysalts, Monash University, Melbourne, Australia.
Often in rounded crystal aggregates or in divergent crystal clusters. Isostructural with its arsenate analogue arsenoclasite and aggregates to 5 mm may be overgrown on arsenoclasite. Although gatehouseite is the phosphorus analog of arsenoclasite and occurs together or in close association with it, arsenoclasite is usually the more conspicuous mineral. Gatehouseite frequently occurs as pale-yellow gemmy rod-like crystals that are usually smaller than the red to red-brown arsenoclasite. The arsenoclasite is frequently somewhat blocky to wedge-shaped and is often ten or more times larger than gatehouseite, suggesting a different phase of growth. Caution is advised in sight identifying gatehouseite as gatehouseite occurs as somewhat bladed crystals. Arsenoclasite without gatehouseite present has been distributed as only gatehouseite.


Classification of GatehouseiteHide

Approved
Approval Year:
1992
First Published:
1993
8.BD.10

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
D : With only medium-sized cations, (OH, etc.):RO4= 2:1
41.4.1.2

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
4 : (AB)5(XO4)2Zq

Physical Properties of GatehouseiteHide

Adamantine, Sub-Adamantine, Greasy
Transparency:
Transparent, Translucent
Colour:
Pale yellow. Occasionally light reddish orange to light reddish brown and may be confused with arsenoclasite.
Comment:
Usually a shade of yellow and not red.
Streak:
Pale yellow
Hardness:
Tenacity:
Brittle
Cleavage:
Perfect
{010}
Fracture:
Splintery
Density:
3.74 g/cm3 (Calculated)
Comment:
3.85 for the empirical formula

Optical Data of GatehouseiteHide

Type:
Biaxial (+/-)
RI values:
nα = 1.741 nβ = 1.750 nγ = 1.761
Birefringence:
0.020
Max Birefringence:
δ = 0.020
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r > v moderate
Optical Extinction:
Parallel, length slow
Pleochroism:
Strong
Comments:
Brown to colorless

Chemical Properties of GatehouseiteHide

Formula:
Mn2+5(PO4)2(OH)4
Common Impurities:
Fe,Cu,Zn,Pb,Al,V,As,H2O

Crystallography of GatehouseiteHide

Crystal System:
Orthorhombic
Class (H-M):
2 2 2 - Disphenoidal
Space Group:
P21 21 21
Setting:
P21 21 21
Cell Parameters:
a = 9.097 Å, b = 5.693 Å, c = 18.002 Å
Ratio:
a:b:c = 1.598 : 1 : 3.162
Unit Cell V:
932.31 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Isolated crystals are rare, originally less than 100 microns long. Bladed crystals show c {001}. m {110}, and n {102}.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.483 Å(10)
4.034 Å(10)
3.540 Å(5)
2.900 Å(100)
2.853 Å(70)
2.802 Å(50)
2.702 Å(80)
2.586 Å(5)
2.291 Å(10)
2.265 Å(10)
2.186 Å(5)
2.022 Å(15)
2.014 Å(10)
1.784 Å(5)
1.767 Å(2)
1.722 Å(10)
1.709 Å(10)
1.699 Å(10)
1.608 Å(15)
Comments:
Pring and Birch (1993)

Type Occurrence of GatehouseiteHide

General Appearance of Type Material:
Individual crystals rare and originally found less than 100 microns in length. Usually, yellow to straw-yellow (uncommonly reddish-orange to reddish brown similar to arsenoclasite) transparent to translucent intergrown crystals. The most closely associate
Associated Minerals at Type Locality:

Synonyms of GatehouseiteHide

Other Language Names for GatehouseiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Gatehouseite associated with CalciteCaCO3
2 photos of Gatehouseite associated with HausmanniteMn2+Mn3+2O4
1 photo of Gatehouseite associated with BaryteBaSO4

Related Minerals - Nickel-Strunz GroupingHide

8.BD.05CornwalliteCu5(AsO4)2(OH)4Mon. 2/m : P21/b
8.BD.05PseudomalachiteCu5(PO4)2(OH)4Mon. 2/m : P21/b
8.BD.05ReichenbachiteCu5(PO4)2(OH)4Mon. 2/m
8.BD.10ArsenoclasiteMn2+5(AsO4)2(OH)4Orth.
8.BD.15ParweliteMn10Sb2As2Si2O24Mon. m : Bb
8.BD.20ReppiaiteMn2+5(VO4)2(OH)4Mon.
8.BD.25LudjibaiteCu5(PO4)2(OH)4Tric. 1 : P1
8.BD.30CornubiteCu5(AsO4)2(OH)4Tric. 1 : P1

Related Minerals - Dana Grouping (8th Ed.)Hide

41.4.1.1ArsenoclasiteMn2+5(AsO4)2(OH)4Orth.

Fluorescence of GatehouseiteHide

Not fluorescent in UV

Other InformationHide

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

References for GatehouseiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ruszala, F.A., Anderson, J.B., Kostiner, E. (1977) Crystal structures of two isomorphs of arsenoclasite: Co5(PO4)2(OH)4 and Mn5(PO4)2(OH)4. Inorganic Chemistry: 16: 2417-2422.
Pring, A., Birch, W.D. (1993) Gatehouseite, a new manganese hydroxy phosphate, from Iron Monarch, South Australia. Mineralogical Magazine: 57: 309-313.
Jambor, J.L., Grew, E.S. (1994) New mineral names. American Mineralogist: 79: 185-189.
Mandarino, J.A. (1997) New Minerals 1990-1994. The Mineralogical Record Inc.
Elliott, P., Pring, A. (2011) The crystal structure of gatehouseite. Mineralogical Magazine: 75: 2823-2832.

Internet Links for GatehouseiteHide

Localities for GatehouseiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia (TL)
 
  • South Australia
    • Eyre Peninsula
      • Middleback Range
        • Iron Knob
Mineralogical Magazine(1993) 57, 309-313; NM 90-94 (1997); HB4 (2000); Pring A, Birch W D (1993) Gatehouseite, a new manganese hydroxy phosphate from Iron Monarch, South Australia. Mineralogical Magazine 57, 309-313
South Africa
 
  • Northern Cape
    • Kalahari manganese field
      • Kuruman
        • N'Chwaning Mines
Personally communication between Bruce Cairncross and Frank Hawthorne who quatitatively identified a second, virtually identical specimen of gatehouseite
 
矿物 and/or 产地  
版权所有© mindat.org1993年至2020年,除了规定的地方。 Mindat.org全赖于全球数千个以上成员和支持者们的参与。
隐私政策 - 条款和条款细则 - 联络我们 Current server date and time: 2020.4.4 20:31:32 Page generated: 2020.3.28 13:52:50
Go to top of page