Rare 15 systematic minerals collection / set from Czech Republic / Great offer for this price !

Systematic minerals collection from Czech Republic.Collection contains 15 identified and analyzed systematic minerals.There is about 6 minerals from type locality,also for example rare Hulsite,Čechite and other rare minerals. This is valuable set for any systematic minerals collector,advanced as well for beginner.Many localities of presented minerals is not existing or not be able to be visited and available to collect it.

We have only few collections with exactly same kind of minerals as pictured and provide just random pick,so every collection may vary little bit from sizes,shapes,etc,but has same minerals as described.It is very nice arrangement of the collection,all is nice prepared and fit in a box.

Price is for complete collection of 15 systematic thumbnail specimens and random collection pick with same kind of minerals.

Size of box is 180 x 90 x 20 mm

Total weight: about 170 grams

#1. Offretite from Vinaricka Hora near Kladno,Czech Republic

Formula:KCaMg(Si13Al5)O36 · 15H2O

Hardness:4 - 41

Crystal System:Hexagonal

Member of:Zeolite Group

Name:Named in honor of Albert Jules Joseph Offret (24 October 1857, Douai, France - 4 March 1933, Lyon, France), professor at the University of Lyon, France.

#2. Meurigite-K from Knezi Vrch,Teskov

Formula:KFe3+8(PO4)6(OH)7 · 6.5H2O

Colour:Yellowish brown, cream to white, pale to canary yellow

Lustre:Sub-Vitreous, Waxy, Silky

Hardness:3

Specific Gravity:2.96

Crystal System:Monoclinic

Name:Named in 1996 by William D. Birch, Allan Pring, P. G. Self, R. B. Gibbs, E. Kleck, Martin C. Jensen, Eugene Edward Foord in honor of John Meurig Thomas [born 15 December, 1932 Llanelli, South Wales, United Kingdom - died 13 November, 2020], a prolific reasearcher and crystal chemist known for his work on heterogeneous catalysis, solid-state chemistry, and surface and materials science, University of Cambridge, Cambridge, England, UK.

#3. Stolzite from type locality Cinovec (Zinnwald),Czech Republic

Formula:Pb(WO4)

Colour:Reddish brown, brown, yellowish gray, smoky-gray, gray-brown, ostraw-yellow, lemon-yellow, orange-yellow, red or green (rare)

Lustre:Sub-Adamantine, Resinous

Hardness:21 - 3

Specific Gravity:8.34

Crystal System:Tetragonal

Member of:Scheelite Group

Name:Named in honor of Johann Anton Stolz (11 June 1778, Prague - 17 August 1855, Teplice), physician and mineral collector from Teplice, Bohemia, Czech Republic. He spent much of his life interested in minerals and built an important collection. He provided the first specimen of stolzite for study.

#4.  Lithiophorite from Olesna near Milina



Formula: (Al,Li)MnO2(OH)2

Colour:Blue to black

Lustre:Metallic, Dull

Hardness:3

Crystal System:Trigonal

Name:Named for LITHIum and the Greek phoros, for 'to bear'.

#5.  Arsenic from Svornost,Jachymov,Czech Republic

Formula:As

Colour:Tin-white, tarnishing to dark grey or black.

Lustre:Metallic, Sub-Metallic, Dull

Hardness:31

Specific Gravity:5.63 - 5.78

Crystal System:Trigonal

Member of:Arsenic Group

Name:Name of early origins from the Greek ????????? ("arsenikon"), "masculine", alluding to its potent properties. The Oxford English Dictionary lists the first record of the word "arsenic" in a 1310 book concerning orpiment de iiij libris de orpiment venditis, of unknown authorship.

#6.  Čechite from type locality Posepny,Vrancice,Czech Republic

Formula:PbFe2+(VO4)(OH)

Colour:Black

Lustre:Resinous, Sub-Metallic

Hardness:41 - 5

Specific Gravity:5.88

Crystal System:Orthorhombic

Member of:Adelite-Descloizite Group

Name:Named by Zdeněk Mrázek and Zdeněk Táborský in 1981 in honor of František Čech [August 17, 1929 Meřín near Velké, Mezíříkí, Czech Republic - September 4, 1995] mineralogist, Charles University, Prague, Czech Republic.

Co-Type Localities: ? Alexander Mine, Vrančice, Příbram District, Central Bohemian Region, Czech Republic

? Pošepný vein outcrop, Vrančice, Příbram District, Central Bohemian Region, Czech Republic

#7.  Miargirite from Policany near Kutna Hora,Czech Republic

Formula:AgSbS2

Colour:Black with dark red internal reflections

Lustre:Metallic

Hardness:21

Specific Gravity:5.25

Crystal System:Monoclinic

Name:From Greek "meion" (less) and "argyros" (silver), for it contains less silver than pyrargyrite which it was often mistaken for.

#8.  Krupkaite from type locality Barbora,Krupka,Czech Republic

Formula:PbCuBi3S6

Colour:steel-grey

Lustre:Metallic

Hardness:31 - 4

Specific Gravity:6.98 (Calculated)

Crystal System:Orthorhombic

Name:Named for the town of Krupka, Czech Republic, near the type locality.

Type Locality:? Barbora adit, Knöttel area (Knötel; Knödel; Knödlberg), Krupka, Teplice District, Ústí nad Labem Region, Czech Republic

#9.  Hulsite from Zlaty Kopec near Jachymov,Czech Republic

Formula:(Fe2+,Mg)2(Fe3+,Sn)(BO3)O2

Colour:Black

Lustre:Vitreous, Sub-Metallic

Hardness:3

Specific Gravity:4.28

Crystal System:Monoclinic

Member of:Pinakiolite Group

Name: Named in 1908 by Adolph Knopf and Waldemar T. Schaller in honor of Alfred Hulse Brooks, American (July 18, 1871 – November 22, 1924), chief geologist in Alaska for the United States Geological Survey from 1903 to 1924.

Type Locality:? Brooks Mountain, Seward Peninsula, Nome Census Area, Alaska, USA

#10.  Zeophylite from type locality Velke Brezno,Czech Republic

Formula:Ca13Si10O28(OH)2F8 · 6H2O

Colour:White

Lustre:Pearly

Hardness:3

Crystal System:Trigonal

Name:Named after the Greek "???" (zeo), 'to boil', and "??????" (phyllos), 'leaf', alluding to its occurrence in hemispheral foliated forms and intumescence (swelling) on heating.

Type Locality:? Velké Březno, Ústí nad Labem District, Ústí nad Labem Region, Czech Republic

#11. Berzelianite from Bukov,Moravia,Czech Republic

Formula:Cu2Se

Colour:Silver-White, shiny lead-grey; easily tarnishes iridescent blue-grey

Lustre:Metallic

Hardness:2

Specific Gravity:6.71

Crystal System:Isometric

Member of:Berzelianite-Umangite Group

Name: Named in 1850 by James Dwight Dana in honor of Jöns Jakob Berzelius, Swedish chemist [August 20, 1779 Linköping, Sweden - August 7, 1848 Stockholm, Sweden]. Berzelius is the father of analytical chemistry, inventor of chemical symbol notation. and discoverer of selenium (Se), cerium (Ce), silicon (Si), thorium (Th), titanium (Ti), and zirconium (Zr), in addition to other elements that he gave to his students to work on.

The mineral berzeliite is also named after Berzelius.

#12. Heyrovskýite from type locality Hurky near Cista,Czech Republic

Formula:Pb6Bi2S9

Colour:Tin white

Lustre:Metallic

Hardness:4 - 5

Crystal System:Orthorhombic

Member of:Lillianite Homologous Series Group

Name:Named in 1971 J, Klominsky, M. Rieder, C. Kieft, and L. Mraz in honor of Jaroslav Heyrovský [1890-1967], professor of chemistry at Charles University, Prague, Czech Republic.

Type Locality:? Hůrky, Čistá ring, Čistá, Rakovník District, Central Bohemian Region, Czech Republic

#13.  Sekaninaite from type locality Dolni Bory,Czech Republic

Formula:(Fe,Mg)2Al3(AlSi5O18)

Colour:grayish-blue to bluish-violet

Lustre:Vitreous

Hardness:7

Crystal System:Orthorhombic

Name:Named in honor of Josef Sekanina (4 September 1901, Knínice u Boskovic - 28 November 1986, Letovice), Czech mineralogist who first found the mineral.

Type Locality:? Pegmatite vein No. 4, Dolní Bory, Bory, Žďár nad Sázavou District, Vysočina Region, Czech Republic

#14. Paulingite-Ca from Vinaricka Hora near Kladno,Czech Republic

Formula:(Ca,K,Na,Ba, ?)10 (Si, Al)42O84 · 34H2O

Lustre:Vitreous

Hardness:5

Crystal System:Isometric

Member of:Zeolite Group

Name:Named after Linus Carl Pauling (28 February 1901, Portland, Oregon, USA – 19 August 1994, Big Sur, California), professor of chemistry, California Institute of Technology, Pasadena, CA, USA, "in recognition of his outstanding contributions to the understanding of the complex structures of silicate minerals and other compounds." He was one of the most important scientists of all time, published more than 1200 papers and books, and was awarded numerous awards including the 1954 Nobel Prize in Chemistry, 1962 Nobel Peace Prize, and 1967 Roebling Medal.

Type Locality:? Three Mile Creek, Ritter, Grant Co., Oregon, USA

#15. Bismuth from Svornost,Jachymov,Czech Republic

Formula:Bi

Colour:Reddish-white to creamy-white; tarnishes iridescent pinkish, yellowish or bluish

Lustre:Metallic

Hardness:2 - 21

Specific Gravity:9.7 - 9.83

Crystal System:Trigonal

Member of:Arsenic Group

Name:As a chemical element Bismuth was officially discovered in 1753 by French scientist Claude Geoffroy. The origin of the name comes from the German words Weisse Masse meaning white mass. However, around 1400 the element name is already present in some scientific treaties. In fact before Geoffroy, also the Swiss scientist Theophrastus Bombastus von Hohenheim (1493 - 1541) probably better known under his Latinized name of Paracelsus, mentioned the word “Bisemutum”. He said that the Latin word came from a German term “Wissmut”. For him, the word “wissmut” was because in Saxony, around St. Georges, the mineral was extracted (gemutet), in the fields (in den Wiesen). For others, the word comes from another similar german word: Weissmuth = white material, and this is supported by the fact that bismuth is a bright metal of white colour.

Type Locality:? Schneeberg, Erzgebirgskreis, Saxony, Germany

Above informations are used from mindat.org mineral database