Talc
Talc (derived from Persian: تالک tālk; Arabic: طلق ṭalq) is a mineral composed of hydrated magnesium silicate with the chemical formula H2Mg3(SiO3)4 or Mg3Si4O10(OH)2. In loose form, it is the widely used substance known as baby powder (aka talcum). It occurs as foliated to fibrous masses, and in an exceptionally rare crystal form. It has a perfect basal cleavage, and the folia are non-elastic, although slightly flexible. It is the softest known mineral and listed as 1 on the Mohs hardness scale. As such, it can be easily scratched by a fingernail. It has a specific gravity of 2.5–2.8, a clear or dusty luster, and is translucent to opaque. Talc is not soluble in water, but it is slightly soluble in dilute mineral acids. Its color ranges from white to grey or green and it has a distinctly greasy feel. Its streak is white.
Soapstone is a metamorphic rock composed predominantly of talc.
Formation
Talc is a metamorphic mineral resulting from the metamorphism of magnesian minerals such as serpentine, pyroxene, amphibole, olivine, in the presence of carbon dioxide and water. This is known as talc carbonation or steatization and produces a suite of rocks known as talc carbonates.
Talcum (disambiguation)
Talcum may refer to:
Podcasts:
-
by Sesame Street
-
by Die Sterne
-
by Fugazi
Do You Like Me?
by: Sesame StreetErnie: Do you like me?
Am I okay?
Do you like me?
If you do please say,
That you like me,
Just this way.
I want to hear it from you.
Bert: (Oh, Ernie.)
Ernie: (No, really, Bert.)
Ernie: Do you like me?
Do you think I'm swell?
Do you like me?
You know me well,
If you like me.
Won't you tell?
I want to hear it from you.
We always have a super time,
When we play and sing a song.
But I wonder if you still like me,
Even when I do things wrong?
Bert: (Oh, Ernie.)
Bert: Yes, I like you.
Ernie: (Really?)
Bert: That is right.
Oh I like you.
Ernie: (Oh good!)
Bert: Can you turn out the light?
I like you.
Now can we say good night?
Ernie: (Good night!)
Bert: Now that you've heard it from me.
Ernie: (Oh gee, thanks Bert. I think I can sleep now.)
Bert: (Ahh, that's good. Good night.)
Ernie: (Goodnight! (pause) Oh, but, ah, Bert?)
Bert: (Ernie, what?)
Ernie: (I like you, too, Bert.)
Bert: (Oh ... (mutter))