	1
P₂O₅	42,76 %
Al₂O₃	6,37 %
Fe₂O₃	1,48 %
FeO	7,26 %
MnO	8,81 %
CaO	26,96 %
Na₂O	0,44 %
K₂O	0,07 %
Li₂O	0,42 %
H₂O+	1,88 %
H₂O-	0,03 %
Insol	0,28 %
Total:	91 %

Sample references:

1	-	Fransolet, A.-M., von Knorring, O., and Fontan, F. (1992) A new occurrence of samuelsonite in the Buranga pegmatite, Rwanda. Bulletin of the Geological Society of Finland: 64(1): 13-21.

Comments:

Associated with lazulite-scorzalite series in trolleite.

Habit:

fibrous

Colour:

greenish yellow

Confirmation

Validity:

Believed Valid

Data

Mineral Data:

Click here to view Samuelsonite data

Locality Data:

Click here to view Buranga pegmatite, Muhororo, Ngororero District, Western Province, Rwanda

Data Identifiers

Mindat Occurrence Record ID:

164642

Long-form Identifier:

1:3:164642:9

GUID (UUID V4):

3eec953e-90da-43ed-bce3-e1c9a5a6f98e

References

von Knorring, O. (1972) Notes on phosphate minerals from Buranga pegmatite. 16th annual Report Res. Inst. afr. Geol., Univ. Leeds: 56-57.

von Knorring, O. (1973) Notes on pegmatite minerals from Rwanda, Uganda and South West Africa. 17th annual Report Res. Inst. afr. Geol., Univ. Leeds, 72-73.

Fransolet, A.-M., von Knorring, O., and Fontan, F. (1992) A new occurrence of samuelsonite in the Buranga pegmatite, Rwanda. Bulletin of the Geological Society of Finland: 64(1): 13-21.

Daltry, V.D.C. and von Knorring, O. (1998) Type-mineralogy of Rwanda with particular reference to the Buranga pegmatite. Geologica Belgica: 1: 9-15.

Anthony, John Williams, Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. (2000) Handbook of Mineralogy Vol. 4 - Arsenates, phosphates, vanadates. Mineral Data Publishing, Tucson, Arizona.

Reference Search (possible matching items)

	*(2023) Samuelsonite. Handbook of Mineralogy. Mineralogical Society of America*	Report (issue)
	Ba)Ca8 (Fe2+ , Mn2+ )4 Al2 (PO4 )10 (OH)2 Samuelsonite c 2001-2005 Mineral Data Publishing, version...)Σ=4.30 Al1.52 (PO4 )9.76 (OH)5.35 . (2) Buranga pegmatite, Rwanda; corresponds 3+ to (Ba0.24 Ca0.21 )Σ=0...scorzalite, apatite, burangaite, gatumbaite (Buranga pegmatite, Rwanda). Distribution: From the Palermo #1 mine...Co., New Hampshire, USA. In the Buranga pegmatite, near Gatumba, Rwanda. Name: Honoring Peter B. Samuelson... USA, for his efforts in field collecting of pegmatite minerals. Type Material: National School of Mines
	*(2023) Burangaite. Handbook of Mineralogy. Mineralogical Society of America*	Report (issue)
	c = 13.438(1) X-ray Powder Pattern: Buranga pegmatite, Rwanda. 11.71 (100), 3.081 (90), 3.115 (70),...4.05 12.32 Total 100.27 98.35 (1) Buranga pegmatite, Rwanda; corresponds to (Na0.70 Ca0.25 )Σ=0.95...other phosphates in a zoned granite pegmatite (Buranga pegmatite, Rwanda). Association: Scorzalite, bjarebyite...trolleite, samuelsonite, gatumbaite, wardite, brazilianite, apatite, quartz (Buranga pegmatite, Rwanda); berlinite...Sweden). Distribution: In the Buranga pegmatite, near Gatumba, Rwanda. At Hålsjöberg, Värmland, Sweden
	*(2023) Bertossaite. Handbook of Mineralogy. Mineralogical Society of America*	Report (issue)
	= 7.23(1) Z=4 X-ray Powder Pattern: Buranga pegmatite, Rwanda. (ICDD 41-1450). 3.059 (100), 3.104(84)...2.577 (40), 4.32 (33) Chemistry: (1) Buranga pegmatite, Rwanda; an analysis was not published - based...of mineralization in a lithium-bearing granite pegmatite. Association: Amblygonite, lazulite-scorzalite...trolleite, samuelsonite, quartz. Distribution: Name: In the Buranga pegmatite, near Gatumba, Rwanda. Honoring...Bertossa, Director of the Geological Survey of Rwanda. Type Material: Royal Museum of Central Africa
	*(2023) Trolleite. Handbook of Mineralogy. Mineralogical Society of America*	Report (issue)
	brazilianite, apatite, gatumbaite, samuelsonite, wyllieite (Buranga pegmatite, Rwanda). Distribution: In Sweden...from Hökensås, Västergötland. In the Buranga pegmatite, Rwanda. On Mt. Perry, 75 km southwest of Bundaberg
	Segeler, Curt G., Kampf, Anthony R., Ulrich, William, Whitmore, Robert W. (1981) Phosphate Minerals of the: Palermo No.1 Pegmatite. Rocks & Minerals, 56 (5) 197-214 doi:10.1080/00357529.1981.11764597	Journal (article/letter/editorial)
	their unusual mineral species. The Palermo No. 1 pegmatite is located in the White Moun tains of central...North Groton. Its surround ings and even the pegmatite itself are unpretentious. The min erals of greatest...issue of Rocks and Minerals entitled " T h e Pegmatite Minerals of the Palermo Quarry." Verrow's mineral...served to reveal the truly rich mineralogy of this pegmatite. By the end of the 1943 mining season, General...working primarily on the phosphates of the Palermo pegmatite. In May o f 1974, the mineral rights to the quarry
	*Nriagu, J. O., Moore, P. B. - Eds.* (1984) Phosphate Minerals. Springer Berlin Heidelberg. doi:10.1007/978-3-642-61736-2**	Book
	phosphorus handbook. Wiley. New York Moore PB (1982) Pegmatite minerals ofP(V) and B(III). Mineral Assoc Can...Mode of Occurrence: Occurs in large masses in pegmatite at several mines in the Custer-Pringle area, Custer... South Dakota. Also found in pegmatite at Chanteloube, France; Buranga, Ruanda; Varutrask, Sweden; Sukula...Sukula and Lemnas, Finland; and in several other pegmatite deposits Amblygonite Optical Constants: IX...in Miocene clay at Bellaver de Cerdena, Gerona Province, Spain; in a bituminous clay rock at Messel, Hesse
	*Chukanov, Nikita V., Chervonnyi, Alexandr D. (2016) Infrared Spectroscopy of Minerals and Related Compounds. Springer International Publishing. doi:10.1007/978-3-319-25349-7*	Book
	42(H2O)0.18[Al2(Be2.35Li0.65)Si6O18] from Mokrusha pegmatite, Murzinka, Middle Urals (Yakubovich et al. 2009;...phosphates: nahpoite Na2(HPO4) from peralkaline pegmatite of the Lovozero massif (a), newberyite Mg(HPO4)·3H2O...of melanophlogite from Rio Fortullino, Lovorno province, Tuscany, Italy contains a strong band at 2330-2336...guano deposit on the Mt. Pabellón de Pica, Iquique Province, Tarapacá Region, Chile (Bojar et al. 2010). Now...of sturmanite from the Black Rock mine, Kuruman District, South Africa, determined from its crystal structure
	*Roberts, Willard Lincoln, Campbell, Thomas J., Rapp, George Robert Jr. (1990) Encyclopedia of Minerals* (2nd ed.) Van Nostrand Reinhold Co., New York.**	Book (edition)
	of weakness caused by deformation or twinning. pegmatite Very coarse-grained granitic rock representing...Colorado at the Pelican Dives mine, Silver Plume district, and at the Little Emma mine, Clear Creek County;...lode, Summit County, and in the Cripple Creek district. It is also found in Canada; Mexico; Bolivia;...California; in sodalite-syenite in the Julianehaab district, Greenland; in the liparite lavas of the island...slate and metamorphosed dolomite in the Beiyun-Obo district, Inner Mongolia, China, associated with aegirine
	*Roberts, Willard Lincoln, Campbell, Thomas J., Rapp, George Robert Jr. (1990) Encyclopedia of Minerals* (2nd ed.) Van Nostrand Reinhold Co., New York.**	Book (edition)
	of weakness caused by deformation or twinning. pegmatite Very coarse-grained granitic rock representing...Colorado at the Pelican Dives m.ine, Silver Plume district, and at the Little Emma mine, Clear Creek County;...lode, Summit County, and in the Cripple Creek district. It is also found in Canada; Mexico; Bolivia;...Califo1nia; in sodalite-syenite in the Julianehaab district, Greenland; in the liparite lavas of the island...slate and metamorphosed dolomite in the Beiyun-Obo district, Inner Mongolia, China, associated with aegirine
	*Nickel, Ernest H., Nichols, Monte C. (1991) Mineral Reference Manual. Van Nostrand Reinhold, New York.*	Book
	Lustrous black. Wilagedera prospect. North Western Province, Sri Lanka. H= 3-4, 0^= 3.94, Dg= 3.97, VIIIE...Lustrous black. Wilagedera prospect. North Western Province, Sri Lanka. H= 3-4, Djjj= 3.94, D(.= 4.22...Translucent buff, colorless. Petrogale cave, Madura, Western Australia, Australia. H=?, Djj3=?, Dq= 2.34, VHA... Metallic grey. Sedmochislenitsi mine, Vratsa district, Balkan Peninsula, Bulgaria. H= 2.5, Djj4= 6.32...Translucent dark blue-green, green. Sapucaia Pegmatite, Galileia, Minas Gerais, Brazil. H=6, Djjj=3.60
	*Back, Malcolm E., Mandarino, Joseph A. (2008) Fleischer's Glossary of Mineral Species 2008. The Mineralogical Record, Inc.*	Book (edition)
	Cand CSPG Pennskiye gubemskiye wdomo.sti (Perm district ga=elle) Pl,ilosopl,ical Maga=ine Periodico de...Obshchestva xiv A □ Abclsonite, CJ1H32N4 Ni, tric., Western Oil Shale Corporation drill core WOSCO, Sec 36...Aktash mercury deposit, Kurai Range. Kosh-Agach district. Gomiy Altay. Russia. 58. 562. l'MR M" 111-129...Provvidenzakaolinquarry,Allumierc,Tolfa Mount district,Roma Province,Lazio,ltaly,NJMM 1976,40~17 (str.),AC 18...NaB1OiOH),. mon., Tincalayu borax deposit, Salta Province, Argentina. 52, 935-945, 60, 879-883 (str.) D
	*Blackburn, William H., Dennen, William H. (1997) Encyclopedia of Mineral Names* - Special Publication No. 1. The Canadian Mineralogist, Ottawa.**	Book
	Trudell, L.C. (1970): Lithologic Description of Western Oil Shale Corporation Project Utah EX—]. Laramie...(1989): Mineral. J. 14, 279. Flores mine, Huanuni District, Oruru, Bolivia. Agardite-(La) (La,Ca)Cu¢(AsO4)3(OH)6°3H20...at Ziryanovsk, Altai Mountains, Semipalatinsk Province, Kazakhstan. Rose, G. (1828) In Haidinger, W....engineer known for his work in the Limoges Altisite district. Chanteloube, Haute-Vienne, France. Na3k6Ti2[AlSigO26]Cl;...plus Gk. hydor, water, plus calcite. Khakassy District, Siberia, Russia. Bilibin, G. (1926): Soc. Russe
	*Bernard, Jan, Hyršl, Jaroslav (2004) Minerals and their Localities* (1st ed.) Granit, Prague.**	Book (edition)
	expressed in abbreviations: Rep. (republic), prov. (province), co. (county), munic. (municipio), pref. (prefecture)...dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g....the revolution in 1997. Its mineral rich Katanga province was renamed Shaba by Mobutu, and is now the Katanga...Katanga administrative region again. The former Kivu province is now divided to three regions: INTRODUCTION...conditions in the gold-bearing "greenstone" in Abitibi province in northern Ontario and Quebec. Some genetic problems
	*Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy* (8th ed.) Wiley-Interscience. p.1872**	Book (edition)
	British Columbia NF Labrador (part of Newfoundland Province) MB Manitoba NB New Brunswick NF Newfoundland...Territory Queensland South Australia Tasmania Victoria Western Australia States, Mexico Aguascaientes Baja California...Co., Bonanza mine, Trinity Co., Michigan Bluff district, Placer Co., in AK, placers at Fairbanks, Iditarod...and quartz veins at Juneau. In Canada, Noranda district, PQ; Porcupine, Kirkland Lake, and Larder Lake...deposits, ON; Atlin and Caribou, BC; and Klondike district, YT. In Mexico, Altar and Magdalena, SON; Parral
	*(2002) Phosphates: Geochemical, Geobiological, and Materials Importance. Reviews in Mineralogy and Geochemistry* Vol. 48. Mineralogical Society of America**	Report (volume)
	Fleet Department of Earth Sciences University of Western Ontario London, Ontario N6A 5B7, Canada INTRODUCTION...1985a), nasonite (Giuseppetti et al. 1971), and samuelsonite (Moore and Araki 1977). Despite a long history...XRD) 9: fermorite, Sitipar deposit, Chhinwara district, India (Smith & Prior 1911; Hughes & Drexler 1991)...sodalite foyaite and quartz-bearing peralkaline pegmatite reflect progressively increasing importance of...strontium-enriched apatites in lamproites from West Kimberley, Western Australia. Am Mineral 74:889-895 Efimov AS, Kravchenko

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Samuelsonite from Buranga pegmatite, Muhororo, Ngororero District, Western Province, Rwanda

Samuelsonite from
Buranga pegmatite, Muhororo, Ngororero District, Western Province, Rwanda