Agustin Agudo Espinosa's Photo Gallery
A73-53XAragonite CaCO3
Linz am Rhein, Neuwied District, Rhineland-Palatinate, GermanyDimensions: 80 mm x 40 mm x 35 mm
Group of prismatic crystals of Aragonite in radial growth.
According to the old label of B. Stürtz the crystals were in basalt, which suggests that it comes exactly from Dattenberg Quarry.
Size 80x40x35 mm
Q3H-0Q1Quartz SiO2
Boyala lode, China River District, Tolima Department, ColombiaDimensions: 55 mm x 35 mm x 25 mm
Pair of quartz crystals in parallel growth and lamellar structure with numerous internal growth inclusions (Quartz window).
Size 55x35x25 mm
597-FGMChamosite (Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Saalfeld-Rudolstadt District, Thuringia, GermanyDimensions: 60 mm x 45 mm x 20 mm
Dense mass of Chamosite (Thuringite variety).
Sample from the Academy of Natural Sciences of Philadelphia (No. 18747)
and of the collection donated to this Institution by the merchant and collector Edward Darling Drow (1861-1919) son of the collector William Appleton Drown.
Most likely this sample actually comes from the collection of the father as indicated by the accompanying label.
7WY-GC6Chalcopyrite CuFeS2
Prinzenstein Mine, Wellmich, Sankt Goarshausen, Loreley, Rhein-Lahn District, Rhineland-Palatinate, GermanyDimensions: 6 mm x 6 mm x 5 mm
Largest Crystal Size: 6 mm
Isolated crystal of Chalcopyrite (Kupferkies) in its original assembly.
It is a typical tetragonal disphenoid crystal with possible presence of tetragonal dipyramid.
It comes from the famous German dealer Wilhelm Maucher (1879-1930)
U4R-8K1Calcite CaCO3
Alnö Complex, Sundsvall, Västernorrland County, SwedenDimensions: 80 mm x 80 mm x 40 mm
Calcite mass with the typical exfoliation and in which it is observed an alternation of dark minerals probably Aegirine and Diopside together with some Cancrinite (unconfirmed).
The sample surely comes from a Ca-Carbonatite Pegmatite. [Probably as a sample of the rock locally named as søvite pegmatite]
Ex. Dr F. Krantz.
2RG-5QDChalcopyrite CuFeS2
Sinjakovo Mine, Jezero, Republika Srpska, Bosnia and HerzegovinaDimensions: 90 mm x 70 mm x 70 mm
Chalcopyrite mass with colored areas with the typical purple and blue shades
Ex collection of Hans Jaklin.
18N-3UWChalcopyrite CuFeS2 , Quartz SiO2
Kelchalpe Cu Deposit, Aurach bei Kitzbühel, Kitzbühel District, Tyrol, AustriaDimensions: 80 mm x 60 mm x 25 mm
Massive Chalcopyrite with some Quartz gangue.
From the collection of Hans Jaklin.
EA3-XPYSerpentine Subgroup D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Serpentinite quarry, Chämleten, Hospental, Urseren, Uri, SwitzerlandDimensions: 16 cm x 4 cm x 3 cm
Columnar aggregate (Picrolite) with the classic silky appearance.
Ex. Collection by Edgar Franz.
Size 16x4x3 cm.
H6T-2JTTalc Mg3Si4O10(OH)2
Hospental, Urseren, Uri, SwitzerlandDimensions: 9 cm x 6 cm x 3 cm
Foliate mass forming a vein in schist.
Size 9x6x3 cm.
From the collection of Edgar Franz-Freiberg (No. 294)
FPL-5DPNepheline Na3K(Al4Si4O16) , Albite Na(AlSi3O8)
Saga 1 Quarry, Sagåsen, Auenlandet, Porsgrunn, Vestfold og Telemark, NorwayDimensions: 14 cm x 10 cm x 5 cm
Largest Crystal Size: 5 cm
Specimen of Nepheline in the form of large crystals included in Albite, with the typical resinous shine (Elaeolite).
Observe the reaction edge in the form of a small pink band around the crystals formed by a mixture of several minerals probably among others Natrolite and Analcime.
size of the piece 14 x10 x 5 cm
Magnificent piece collected in 1992.
Ex collection of Michael Krause.
XVY-WXHQuartz SiO2
Iron Mines, Alonsotegi, Vizcaya, Basque Country, SpainDimensions: 6 cm x 8 cm x 4 cm
Grouping of crystals of Quartz var. Milky Quartz.
Larger crystals exhibit growth, in the form of artichoke.
F3M-GFPCalcite CaCO3
Iceland Spar Mines, Artaun, Dima, Vizcaya, Basque Country, SpainDimensions: 40 mm x 55 mm x 35 mm
Calcite rhombohedron of exfoliation
sample collected and donated by Agustín Valgoma
PQK-U5GCalcite CaCO3
Iceland Spar Mines, Artaun, Dima, Vizcaya, Basque Country, SpainDimensions: 40 mm x 55 mm x 22 mm
Calcite rhombohedron of exfoliation
sample collected and donated by Agustín Valgoma
R31-X8XQuartz SiO2
Tinnsjøvegen, Notodden, Vestfold og Telemark, NorwayField of View: 70 mm
Quartz crystals with growth forms called in "cathedral" consisting of the presence of many crystals grouped in parallel growth.
Sample purchased in the store "Naturens Mangfold" in the city of Oslo.
E1D-M75Quartz SiO2
Hattfjelldal, Nordland, NorwayDimensions: 45 mm x 20 mm x 16 mm
Quartz crystal as highly transparent with Dauphiné habit and the presence of faces of trigonal bipyramid ("S").
Sample purchased at the store of the Natural History Museum of Oslo.
X06-K8WK Feldspar, Quartz SiO2
Hynnekleiv Pegmatite, Hynnekleiv, Froland, Agder, NorwayDimensions: 7 cm x 9 cm x 4 cm
Fragment of a K-feldspar crystal in which sections Quartz crystals are observed.
54R-AXUGarnet Group X3Z2(SiO4)3 , Kyanite Al2(SiO4)O , Omphacite (NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6
Sørøyane, Herøy, Møre og Romsdal, NorwayDimensions: 13 cm x 10 cm x 3 cm
Mass polished of Eclogite formed by numerous crystals of garnet (Almandine- Pyrope) included in a matrix of pyroxene (Omphacite) and Kyanite.
ERP-NMLWolframite (Fe2+)WO4 to (Mn2+)WO4
Altenberg, Sächsische Schweiz-Osterzgebirge, Saxony, GermanyDimensions: 9 cm x 8 cm x 7 cm
Heavy mass of Wolframite formed by tabular crystals in parallel growth.
Note the fine layer of mica which is part of the wall of the vein and like the crystals of Wolframite are placed perpendicular to it.
Sample from the collection of the Philadelphia Academy of Natural Sciences, and formed part of the donation made by the Franklin Institute.
PEN-1CDGalena PbS
Bere Alston Mines, Bere Ferrers, West Devon, Devon, England, UKDimensions: 9 cm x 7 cm
Ancient ore sample formed mainly by fine grained Galena associated to possible Tennantite.
From the collection of the Philadelphia Academy of Natural Sciences and forming part of the specimens donated by Dr. Thomas B. Wilson (1807-1865).
4K3-FYMMuscovite KAl2(AlSi3O10)(OH)2
Landsverk 1 Feldspar Quarry, Landsverk, Evje og Hornnes, Agder, NorwayField of View: 70 cm
Framework of laminar crystals of Muscovite