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Orthoclase Albite & Quartz

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MNT914718

Orthoclase Albite & Quartz

ex Dr. Friedrich Adolf Scharff (Senckenberg, GER)
Classic Locality

Description Tabs

Description
Locality: 
Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.6 × 4.6 × 5.5 cm
Weight: 
182.00gr
Description

Here an extremely interesting specimen with pedigree: Orthoclase, albite and quartz from Baveno, Novara, Italy.
Comes with 3 old labels. 2 of them can be assigned to Dr. Friedrich Adolf Scharff, born 8.11.1812 in Frankfurt/Main., died 19.11.1881. Scharff was in leading positions at the Senckenberg Gesellschaft wrt mineralogical collections for quite some time.
He had an extensive feldspar collection and also published about details of the crystallography of this mineral group. This one came in a lot of historic specimens from a contemporary collection.

Label 1:
Baveno
Feldspath.
Orthoclas in verschiedn. Zwill.
verwachsung [s. blau]. Albit in Gruppen
u. aufgewachsen [s. roth] Bergcrystall,
später als Feldspath, gestörte Fläche
nach oP des letzteren. Glimmer.

Label 2 - front:
Baveno
Feldspath
Druse im Granit, in welcher sich
die Bestandtheile desselben sämtlich
crystallisirt finden. Orthoclas in Zwillingen [die größeren], Albit, Bergcrystall u. Glimmer. - der graue Quarz z. Th. von dem Feldspath umschlossen. Der Albit z. Th. den Orthoclas überziehend. Der Glimmer in oelgrünen Täfelchen und dunkelgrünen Blättchen aufge-
v. d. Steinbrecher gekauft

Label 2 - backside
wachsen. Der Berg xl 00 P.P. 2P2 und
I Trapezoeder. Daneben Chlorit [streaked out: in
bräunlichen/bröcklichen? Tafeln u.] eingesprengt,
auch aphrosideritartig staubig.
Bei d. [streaked out: ziegelrothen] blauen Strich ein weißer Zwil-
lings ortoclas, tafelartig II 0P mit
einem röthlichen einfachen Ort[h]oclas
verwachsen.
Bei d. kleineren blauen Zeichen daneben
Feldspath, Orthoclas in Quarz eingewachsen.
Bei d. blutrothen Zeichen Albit x chen neu-
bildung, auf u. in Quarz eingewachsen
Gelbe Zeichen: Abschärfung der Berg xx,
d. Glimmer th. älter, chloritisch [gestrichen: zersetzt], theils
jünger, oelgrün, fast weich wie Talk

Label 3: as is.

Mineral Data
What's on the rock

Orthoclase

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Hardness: 
6.0
Streak: 
White

Albite

Formula: 
NaAlSi3O8
Strunz: 
9.FA.35
Crystal System: 
Triclinic
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Finnbo (Finbo), Falun, Dalarna, Sweden

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

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Best regards Roger